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Finding the Fourth Proportional to 638,230.60, 957,345.90 and 607,126.60

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Solution

The fourth proportional to 638,230.60, 957,345.90 and 607,126.60 is: 910,689.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,230.60 : 957,345.90 = 607,126.60 : x
  2. Step 2: Convert to fraction form
    638,230.60/957,345.90 = 607,126.60/x
  3. Step 3: Cross multiply
    638,230.60x = 957,345.90 × 607,126.60
  4. Step 4: Simplify right side
    638,230.60x = 581,230,161,290.94
  5. Step 5: Solve for x
    x = 581,230,161,290.94/638,230.60
  6. Step 6: Final answer
    x = 910,689.90

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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.