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Finding the Fourth Proportional to 889,725.60, 1,337,698.80 and 871,063.20

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Solution

The fourth proportional to 889,725.60, 1,337,698.80 and 871,063.20 is: 1,309,639.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    889,725.60 : 1,337,698.80 = 871,063.20 : x
  2. Step 2: Convert to fraction form
    889,725.60/1,337,698.80 = 871,063.20/x
  3. Step 3: Cross multiply
    889,725.60x = 1,337,698.80 × 871,063.20
  4. Step 4: Simplify right side
    889,725.60x = 1,165,220,197,364.16
  5. Step 5: Solve for x
    x = 1,165,220,197,364.16/889,725.60
  6. Step 6: Final answer
    x = 1,309,639.96

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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.