Home / 887,699.39-1,225,000.40-500,511.42

Finding the Fourth Proportional to 887,699.39, 1,225,000.40 and 500,511.42

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Solution

The fourth proportional to 887,699.39, 1,225,000.40 and 500,511.42 is: 690,691.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,699.39 : 1,225,000.40 = 500,511.42 : x
  2. Step 2: Convert to fraction form
    887,699.39/1,225,000.40 = 500,511.42/x
  3. Step 3: Cross multiply
    887,699.39x = 1,225,000.40 × 500,511.42
  4. Step 4: Simplify right side
    887,699.39x = 613,126,687,202.01
  5. Step 5: Solve for x
    x = 613,126,687,202.01/887,699.39
  6. Step 6: Final answer
    x = 690,691.80

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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.