Home / 1,139,726.60-1,572,328.50-686,760.20

Finding the Fourth Proportional to 1,139,726.60, 1,572,328.50 and 686,760.20

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Solution

The fourth proportional to 1,139,726.60, 1,572,328.50 and 686,760.20 is: 947,431.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,139,726.60 : 1,572,328.50 = 686,760.20 : x
  2. Step 2: Convert to fraction form
    1,139,726.60/1,572,328.50 = 686,760.20/x
  3. Step 3: Cross multiply
    1,139,726.60x = 1,572,328.50 × 686,760.20
  4. Step 4: Simplify right side
    1,139,726.60x = 1,079,812,635,125.70
  5. Step 5: Solve for x
    x = 1,079,812,635,125.70/1,139,726.60
  6. Step 6: Final answer
    x = 947,431.28

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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.