Home / 617,921.40-926,882.10-551,436.60

Finding the Fourth Proportional to 617,921.40, 926,882.10 and 551,436.60

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Solution

The fourth proportional to 617,921.40, 926,882.10 and 551,436.60 is: 827,154.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,921.40 : 926,882.10 = 551,436.60 : x
  2. Step 2: Convert to fraction form
    617,921.40/926,882.10 = 551,436.60/x
  3. Step 3: Cross multiply
    617,921.40x = 926,882.10 × 551,436.60
  4. Step 4: Simplify right side
    617,921.40x = 511,116,713,824.86
  5. Step 5: Solve for x
    x = 511,116,713,824.86/617,921.40
  6. Step 6: Final answer
    x = 827,154.90

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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.