Home / 1,139,721.60-1,572,321.60-686,755.20

Finding the Fourth Proportional to 1,139,721.60, 1,572,321.60 and 686,755.20

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Solution

The fourth proportional to 1,139,721.60, 1,572,321.60 and 686,755.20 is: 947,424.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,139,721.60 : 1,572,321.60 = 686,755.20 : x
  2. Step 2: Convert to fraction form
    1,139,721.60/1,572,321.60 = 686,755.20/x
  3. Step 3: Cross multiply
    1,139,721.60x = 1,572,321.60 × 686,755.20
  4. Step 4: Simplify right side
    1,139,721.60x = 1,079,800,034,872.32
  5. Step 5: Solve for x
    x = 1,079,800,034,872.32/1,139,721.60
  6. Step 6: Final answer
    x = 947,424.38

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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.