Home / 7,129,264.57-9,838,387.75-3,866,078.43

Finding the Fourth Proportional to 7,129,264.57, 9,838,387.75 and 3,866,078.43

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Solution

The fourth proportional to 7,129,264.57, 9,838,387.75 and 3,866,078.43 is: 5,335,189.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,129,264.57 : 9,838,387.75 = 3,866,078.43 : x
  2. Step 2: Convert to fraction form
    7,129,264.57/9,838,387.75 = 3,866,078.43/x
  3. Step 3: Cross multiply
    7,129,264.57x = 9,838,387.75 × 3,866,078.43
  4. Step 4: Simplify right side
    7,129,264.57x = 38,035,978,656,586.04
  5. Step 5: Solve for x
    x = 38,035,978,656,586.04/7,129,264.57
  6. Step 6: Final answer
    x = 5,335,189.67

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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.