Home / 686,829.60-1,030,244.40-287,337.60

Finding the Fourth Proportional to 686,829.60, 1,030,244.40 and 287,337.60

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Solution

The fourth proportional to 686,829.60, 1,030,244.40 and 287,337.60 is: 431,006.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,829.60 : 1,030,244.40 = 287,337.60 : x
  2. Step 2: Convert to fraction form
    686,829.60/1,030,244.40 = 287,337.60/x
  3. Step 3: Cross multiply
    686,829.60x = 1,030,244.40 × 287,337.60
  4. Step 4: Simplify right side
    686,829.60x = 296,027,953,309.44
  5. Step 5: Solve for x
    x = 296,027,953,309.44/686,829.60
  6. Step 6: Final answer
    x = 431,006.40

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Similar ratio
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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.