Home / 431,569,312.10-647,353,968.15-392,030,101.70

Finding the Fourth Proportional to 431,569,312.10, 647,353,968.15 and 392,030,101.70

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Solution

The fourth proportional to 431,569,312.10, 647,353,968.15 and 392,030,101.70 is: 588,045,152.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,569,312.10 : 647,353,968.15 = 392,030,101.70 : x
  2. Step 2: Convert to fraction form
    431,569,312.10/647,353,968.15 = 392,030,101.70/x
  3. Step 3: Cross multiply
    431,569,312.10x = 647,353,968.15 × 392,030,101.70
  4. Step 4: Simplify right side
    431,569,312.10x = 253,782,241,969,743,040
  5. Step 5: Solve for x
    x = 253,782,241,969,743,040/431,569,312.10
  6. Step 6: Final answer
    x = 588,045,152.55

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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.