Home / 781,475.40-1,169,102.70-677,449.80

Finding the Fourth Proportional to 781,475.40, 1,169,102.70 and 677,449.80

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Solution

The fourth proportional to 781,475.40, 1,169,102.70 and 677,449.80 is: 1,013,478.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,475.40 : 1,169,102.70 = 677,449.80 : x
  2. Step 2: Convert to fraction form
    781,475.40/1,169,102.70 = 677,449.80/x
  3. Step 3: Cross multiply
    781,475.40x = 1,169,102.70 × 677,449.80
  4. Step 4: Simplify right side
    781,475.40x = 792,008,390,294.46
  5. Step 5: Solve for x
    x = 792,008,390,294.46/781,475.40
  6. Step 6: Final answer
    x = 1,013,478.34

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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.