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Finding the Fourth Proportional to 604,511.40, 907,423.20 and 471,979.20

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Solution

The fourth proportional to 604,511.40, 907,423.20 and 471,979.20 is: 708,481.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,511.40 : 907,423.20 = 471,979.20 : x
  2. Step 2: Convert to fraction form
    604,511.40/907,423.20 = 471,979.20/x
  3. Step 3: Cross multiply
    604,511.40x = 907,423.20 × 471,979.20
  4. Step 4: Simplify right side
    604,511.40x = 428,284,875,997.44
  5. Step 5: Solve for x
    x = 428,284,875,997.44/604,511.40
  6. Step 6: Final answer
    x = 708,481.06

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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.