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Finding the Fourth Proportional to 884,381.62, 1,220,489.90 and 497,318.86

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Solution

The fourth proportional to 884,381.62, 1,220,489.90 and 497,318.86 is: 686,324.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    884,381.62 : 1,220,489.90 = 497,318.86 : x
  2. Step 2: Convert to fraction form
    884,381.62/1,220,489.90 = 497,318.86/x
  3. Step 3: Cross multiply
    884,381.62x = 1,220,489.90 × 497,318.86
  4. Step 4: Simplify right side
    884,381.62x = 606,972,645,709.51
  5. Step 5: Solve for x
    x = 606,972,645,709.51/884,381.62
  6. Step 6: Final answer
    x = 686,324.36

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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.