Home / 642,048,165.60-963,072,248.40-638,464,984.80

Finding the Fourth Proportional to 642,048,165.60, 963,072,248.40 and 638,464,984.80

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Solution

The fourth proportional to 642,048,165.60, 963,072,248.40 and 638,464,984.80 is: 957,697,477.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,048,165.60 : 963,072,248.40 = 638,464,984.80 : x
  2. Step 2: Convert to fraction form
    642,048,165.60/963,072,248.40 = 638,464,984.80/x
  3. Step 3: Cross multiply
    642,048,165.60x = 963,072,248.40 × 638,464,984.80
  4. Step 4: Simplify right side
    642,048,165.60x = 614,887,908,436,007,808
  5. Step 5: Solve for x
    x = 614,887,908,436,007,808/642,048,165.60
  6. Step 6: Final answer
    x = 957,697,477.20

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Half scale
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Double scale
Find fourth proportional to 642,048,166.60, 963,072,249.90 and 638,464,985.80
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.