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Finding the Fourth Proportional to 900,382.40, 1,242,348 and 497,896.64

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Solution

The fourth proportional to 900,382.40, 1,242,348 and 497,896.64 is: 686,997.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,382.40 : 1,242,348 = 497,896.64 : x
  2. Step 2: Convert to fraction form
    900,382.40/1,242,348 = 497,896.64/x
  3. Step 3: Cross multiply
    900,382.40x = 1,242,348 × 497,896.64
  4. Step 4: Simplify right side
    900,382.40x = 618,560,894,910.72
  5. Step 5: Solve for x
    x = 618,560,894,910.72/900,382.40
  6. Step 6: Final answer
    x = 686,997.99

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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.