Home / 431,527,157.40-647,353,721.70-140,344,728.60

Finding the Fourth Proportional to 431,527,157.40, 647,353,721.70 and 140,344,728.60

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Solution

The fourth proportional to 431,527,157.40, 647,353,721.70 and 140,344,728.60 is: 210,537,577.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,527,157.40 : 647,353,721.70 = 140,344,728.60 : x
  2. Step 2: Convert to fraction form
    431,527,157.40/647,353,721.70 = 140,344,728.60/x
  3. Step 3: Cross multiply
    431,527,157.40x = 647,353,721.70 × 140,344,728.60
  4. Step 4: Simplify right side
    431,527,157.40x = 90,852,682,380,186,432
  5. Step 5: Solve for x
    x = 90,852,682,380,186,432/431,527,157.40
  6. Step 6: Final answer
    x = 210,537,577.58

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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.