Home / 420,712,711.02-631,100,787.21-125,584,517.48

Finding the Fourth Proportional to 420,712,711.02, 631,100,787.21 and 125,584,517.48

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Solution

The fourth proportional to 420,712,711.02, 631,100,787.21 and 125,584,517.48 is: 188,386,244.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,712,711.02 : 631,100,787.21 = 125,584,517.48 : x
  2. Step 2: Convert to fraction form
    420,712,711.02/631,100,787.21 = 125,584,517.48/x
  3. Step 3: Cross multiply
    420,712,711.02x = 631,100,787.21 × 125,584,517.48
  4. Step 4: Simplify right side
    420,712,711.02x = 79,256,487,839,860,496
  5. Step 5: Solve for x
    x = 79,256,487,839,860,496/420,712,711.02
  6. Step 6: Final answer
    x = 188,386,244.97

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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.