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Finding the Fourth Proportional to 889,727.60, 1,337,701.80 and 871,065.20

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Solution

The fourth proportional to 889,727.60, 1,337,701.80 and 871,065.20 is: 1,309,642.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    889,727.60 : 1,337,701.80 = 871,065.20 : x
  2. Step 2: Convert to fraction form
    889,727.60/1,337,701.80 = 871,065.20/x
  3. Step 3: Cross multiply
    889,727.60x = 1,337,701.80 × 871,065.20
  4. Step 4: Simplify right side
    889,727.60x = 1,165,225,485,957.36
  5. Step 5: Solve for x
    x = 1,165,225,485,957.36/889,727.60
  6. Step 6: Final answer
    x = 1,309,642.96

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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.