Home / 1,220,346,093.40-1,830,519,140.10-638,258,766.10

Finding the Fourth Proportional to 1,220,346,093.40, 1,830,519,140.10 and 638,258,766.10

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Solution

The fourth proportional to 1,220,346,093.40, 1,830,519,140.10 and 638,258,766.10 is: 957,388,149.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,346,093.40 : 1,830,519,140.10 = 638,258,766.10 : x
  2. Step 2: Convert to fraction form
    1,220,346,093.40/1,830,519,140.10 = 638,258,766.10/x
  3. Step 3: Cross multiply
    1,220,346,093.40x = 1,830,519,140.10 × 638,258,766.10
  4. Step 4: Simplify right side
    1,220,346,093.40x = 1,168,344,887,682,659,072
  5. Step 5: Solve for x
    x = 1,168,344,887,682,659,072/1,220,346,093.40
  6. Step 6: Final answer
    x = 957,388,149.15

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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.