Home / 431,622,427.60-647,433,641.40-140,516,981.20

Finding the Fourth Proportional to 431,622,427.60, 647,433,641.40 and 140,516,981.20

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Solution

The fourth proportional to 431,622,427.60, 647,433,641.40 and 140,516,981.20 is: 210,775,471.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,622,427.60 : 647,433,641.40 = 140,516,981.20 : x
  2. Step 2: Convert to fraction form
    431,622,427.60/647,433,641.40 = 140,516,981.20/x
  3. Step 3: Cross multiply
    431,622,427.60x = 647,433,641.40 × 140,516,981.20
  4. Step 4: Simplify right side
    431,622,427.60x = 90,975,420,816,851,328
  5. Step 5: Solve for x
    x = 90,975,420,816,851,328/431,622,427.60
  6. Step 6: Final answer
    x = 210,775,471.80

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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.