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Finding the Fourth Proportional to 607,299.10, 910,365.45 and 472,288.30

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Solution

The fourth proportional to 607,299.10, 910,365.45 and 472,288.30 is: 707,978.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,299.10 : 910,365.45 = 472,288.30 : x
  2. Step 2: Convert to fraction form
    607,299.10/910,365.45 = 472,288.30/x
  3. Step 3: Cross multiply
    607,299.10x = 910,365.45 × 472,288.30
  4. Step 4: Simplify right side
    607,299.10x = 429,954,950,759.24
  5. Step 5: Solve for x
    x = 429,954,950,759.24/607,299.10
  6. Step 6: Final answer
    x = 707,978.90

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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.