Home / 686,909.76-1,030,661.28-371,588.64

Finding the Fourth Proportional to 686,909.76, 1,030,661.28 and 371,588.64

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Solution

The fourth proportional to 686,909.76, 1,030,661.28 and 371,588.64 is: 557,543.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,909.76 : 1,030,661.28 = 371,588.64 : x
  2. Step 2: Convert to fraction form
    686,909.76/1,030,661.28 = 371,588.64/x
  3. Step 3: Cross multiply
    686,909.76x = 1,030,661.28 × 371,588.64
  4. Step 4: Simplify right side
    686,909.76x = 382,982,023,335.86
  5. Step 5: Solve for x
    x = 382,982,023,335.86/686,909.76
  6. Step 6: Final answer
    x = 557,543.43

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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.