Home / 871,389,344.80-1,305,320,420.40-542,856,455.20

Finding the Fourth Proportional to 871,389,344.80, 1,305,320,420.40 and 542,856,455.20

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Solution

The fourth proportional to 871,389,344.80, 1,305,320,420.40 and 542,856,455.20 is: 813,186,000.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,389,344.80 : 1,305,320,420.40 = 542,856,455.20 : x
  2. Step 2: Convert to fraction form
    871,389,344.80/1,305,320,420.40 = 542,856,455.20/x
  3. Step 3: Cross multiply
    871,389,344.80x = 1,305,320,420.40 × 542,856,455.20
  4. Step 4: Simplify right side
    871,389,344.80x = 708,601,616,318,517,888
  5. Step 5: Solve for x
    x = 708,601,616,318,517,888/871,389,344.80
  6. Step 6: Final answer
    x = 813,186,000.66

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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.