Home / 425,887,540.80-638,831,311.20-272,832,532.80

Finding the Fourth Proportional to 425,887,540.80, 638,831,311.20 and 272,832,532.80

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Solution

The fourth proportional to 425,887,540.80, 638,831,311.20 and 272,832,532.80 is: 409,248,799.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,887,540.80 : 638,831,311.20 = 272,832,532.80 : x
  2. Step 2: Convert to fraction form
    425,887,540.80/638,831,311.20 = 272,832,532.80/x
  3. Step 3: Cross multiply
    425,887,540.80x = 638,831,311.20 × 272,832,532.80
  4. Step 4: Simplify right side
    425,887,540.80x = 174,293,964,666,641,024
  5. Step 5: Solve for x
    x = 174,293,964,666,641,024/425,887,540.80
  6. Step 6: Final answer
    x = 409,248,799.20

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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.