Home / 871,389,345.80-1,305,320,421.90-542,856,456.20

Finding the Fourth Proportional to 871,389,345.80, 1,305,320,421.90 and 542,856,456.20

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Solution

The fourth proportional to 871,389,345.80, 1,305,320,421.90 and 542,856,456.20 is: 813,186,002.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,389,345.80 : 1,305,320,421.90 = 542,856,456.20 : x
  2. Step 2: Convert to fraction form
    871,389,345.80/1,305,320,421.90 = 542,856,456.20/x
  3. Step 3: Cross multiply
    871,389,345.80x = 1,305,320,421.90 × 542,856,456.20
  4. Step 4: Simplify right side
    871,389,345.80x = 708,601,618,438,123,008
  5. Step 5: Solve for x
    x = 708,601,618,438,123,008/871,389,345.80
  6. Step 6: Final answer
    x = 813,186,002.16

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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.