Home / 521,520,783,534.30-782,281,175,301.45-149,291,004,078.30

Finding the Fourth Proportional to 521,520,783,534.30, 782,281,175,301.45 and 149,291,004,078.30

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Solution

The fourth proportional to 521,520,783,534.30, 782,281,175,301.45 and 149,291,004,078.30 is: 223,936,506,117.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,520,783,534.30 : 782,281,175,301.45 = 149,291,004,078.30 : x
  2. Step 2: Convert to fraction form
    521,520,783,534.30/782,281,175,301.45 = 149,291,004,078.30/x
  3. Step 3: Cross multiply
    521,520,783,534.30x = 782,281,175,301.45 × 149,291,004,078.30
  4. Step 4: Simplify right side
    521,520,783,534.30x = 116,787,542,132,306,078,597,120
  5. Step 5: Solve for x
    x = 116,787,542,132,306,078,597,120/521,520,783,534.30
  6. Step 6: Final answer
    x = 223,936,506,117.45

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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.