Home / 781,339.32-1,177,865.18-729,259.11

Finding the Fourth Proportional to 781,339.32, 1,177,865.18 and 729,259.11

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Solution

The fourth proportional to 781,339.32, 1,177,865.18 and 729,259.11 is: 1,099,354.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,339.32 : 1,177,865.18 = 729,259.11 : x
  2. Step 2: Convert to fraction form
    781,339.32/1,177,865.18 = 729,259.11/x
  3. Step 3: Cross multiply
    781,339.32x = 1,177,865.18 × 729,259.11
  4. Step 4: Simplify right side
    781,339.32x = 858,968,909,220.49
  5. Step 5: Solve for x
    x = 858,968,909,220.49/781,339.32
  6. Step 6: Final answer
    x = 1,099,354.52

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.