Home / 748,931.80-1,123,397.70-720,938.20

Finding the Fourth Proportional to 748,931.80, 1,123,397.70 and 720,938.20

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Solution

The fourth proportional to 748,931.80, 1,123,397.70 and 720,938.20 is: 1,081,407.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    748,931.80 : 1,123,397.70 = 720,938.20 : x
  2. Step 2: Convert to fraction form
    748,931.80/1,123,397.70 = 720,938.20/x
  3. Step 3: Cross multiply
    748,931.80x = 1,123,397.70 × 720,938.20
  4. Step 4: Simplify right side
    748,931.80x = 809,900,315,722.14
  5. Step 5: Solve for x
    x = 809,900,315,722.14/748,931.80
  6. Step 6: Final answer
    x = 1,081,407.30

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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.