Home / 509,280.08-702,560.76-339,296.72

Finding the Fourth Proportional to 509,280.08, 702,560.76 and 339,296.72

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Solution

The fourth proportional to 509,280.08, 702,560.76 and 339,296.72 is: 468,065.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,280.08 : 702,560.76 = 339,296.72 : x
  2. Step 2: Convert to fraction form
    509,280.08/702,560.76 = 339,296.72/x
  3. Step 3: Cross multiply
    509,280.08x = 702,560.76 × 339,296.72
  4. Step 4: Simplify right side
    509,280.08x = 238,376,561,468.71
  5. Step 5: Solve for x
    x = 238,376,561,468.71/509,280.08
  6. Step 6: Final answer
    x = 468,065.75

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.