Home / 651,619.20-977,428.80-629,846.40

Finding the Fourth Proportional to 651,619.20, 977,428.80 and 629,846.40

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Solution

The fourth proportional to 651,619.20, 977,428.80 and 629,846.40 is: 944,769.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,619.20 : 977,428.80 = 629,846.40 : x
  2. Step 2: Convert to fraction form
    651,619.20/977,428.80 = 629,846.40/x
  3. Step 3: Cross multiply
    651,619.20x = 977,428.80 × 629,846.40
  4. Step 4: Simplify right side
    651,619.20x = 615,630,010,936.32
  5. Step 5: Solve for x
    x = 615,630,010,936.32/651,619.20
  6. Step 6: Final answer
    x = 944,769.60

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Double scale
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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.