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Finding the Fourth Proportional to 605,246.70, 908,307.45 and 338,724.30

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Solution

The fourth proportional to 605,246.70, 908,307.45 and 338,724.30 is: 508,331.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,246.70 : 908,307.45 = 338,724.30 : x
  2. Step 2: Convert to fraction form
    605,246.70/908,307.45 = 338,724.30/x
  3. Step 3: Cross multiply
    605,246.70x = 908,307.45 × 338,724.30
  4. Step 4: Simplify right side
    605,246.70x = 307,665,805,186.04
  5. Step 5: Solve for x
    x = 307,665,805,186.04/605,246.70
  6. Step 6: Final answer
    x = 508,331.24

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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.