Home / 1,139,732.60-1,572,336.78-686,766.20

Finding the Fourth Proportional to 1,139,732.60, 1,572,336.78 and 686,766.20

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Solution

The fourth proportional to 1,139,732.60, 1,572,336.78 and 686,766.20 is: 947,439.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,139,732.60 : 1,572,336.78 = 686,766.20 : x
  2. Step 2: Convert to fraction form
    1,139,732.60/1,572,336.78 = 686,766.20/x
  3. Step 3: Cross multiply
    1,139,732.60x = 1,572,336.78 × 686,766.20
  4. Step 4: Simplify right side
    1,139,732.60x = 1,079,827,755,520.84
  5. Step 5: Solve for x
    x = 1,079,827,755,520.84/1,139,732.60
  6. Step 6: Final answer
    x = 947,439.56

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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.