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Finding the Fourth Proportional to 905,296.64, 1,249,330.32 and 497,424

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Solution

The fourth proportional to 905,296.64, 1,249,330.32 and 497,424 is: 686,456.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,296.64 : 1,249,330.32 = 497,424 : x
  2. Step 2: Convert to fraction form
    905,296.64/1,249,330.32 = 497,424/x
  3. Step 3: Cross multiply
    905,296.64x = 1,249,330.32 × 497,424
  4. Step 4: Simplify right side
    905,296.64x = 621,446,885,095.68
  5. Step 5: Solve for x
    x = 621,446,885,095.68/905,296.64
  6. Step 6: Final answer
    x = 686,456.63

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Similar ratio
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1.5x scale

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.