Home / 1,143,430.56-1,712,859.15-687,770.15

Finding the Fourth Proportional to 1,143,430.56, 1,712,859.15 and 687,770.15

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Solution

The fourth proportional to 1,143,430.56, 1,712,859.15 and 687,770.15 is: 1,030,279.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,143,430.56 : 1,712,859.15 = 687,770.15 : x
  2. Step 2: Convert to fraction form
    1,143,430.56/1,712,859.15 = 687,770.15/x
  3. Step 3: Cross multiply
    1,143,430.56x = 1,712,859.15 × 687,770.15
  4. Step 4: Simplify right side
    1,143,430.56x = 1,178,053,385,960.08
  5. Step 5: Solve for x
    x = 1,178,053,385,960.08/1,143,430.56
  6. Step 6: Final answer
    x = 1,030,279.78

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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.