Home / 425,887,612.80-638,831,419.20-272,832,604.80

Finding the Fourth Proportional to 425,887,612.80, 638,831,419.20 and 272,832,604.80

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Solution

The fourth proportional to 425,887,612.80, 638,831,419.20 and 272,832,604.80 is: 409,248,907.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,887,612.80 : 638,831,419.20 = 272,832,604.80 : x
  2. Step 2: Convert to fraction form
    425,887,612.80/638,831,419.20 = 272,832,604.80/x
  3. Step 3: Cross multiply
    425,887,612.80x = 638,831,419.20 × 272,832,604.80
  4. Step 4: Simplify right side
    425,887,612.80x = 174,294,040,128,416,768
  5. Step 5: Solve for x
    x = 174,294,040,128,416,768/425,887,612.80
  6. Step 6: Final answer
    x = 409,248,907.20

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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.