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Finding the Fourth Proportional to 605,434.80, 907,714.80 and 339,276.90

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Solution

The fourth proportional to 605,434.80, 907,714.80 and 339,276.90 is: 508,670.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,434.80 : 907,714.80 = 339,276.90 : x
  2. Step 2: Convert to fraction form
    605,434.80/907,714.80 = 339,276.90/x
  3. Step 3: Cross multiply
    605,434.80x = 907,714.80 × 339,276.90
  4. Step 4: Simplify right side
    605,434.80x = 307,966,663,428.12
  5. Step 5: Solve for x
    x = 307,966,663,428.12/605,434.80
  6. Step 6: Final answer
    x = 508,670.24

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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.