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Finding the Fourth Proportional to 909,850, 1,255,187.28 and 527,655.28

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Solution

The fourth proportional to 909,850, 1,255,187.28 and 527,655.28 is: 727,928.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,850 : 1,255,187.28 = 527,655.28 : x
  2. Step 2: Convert to fraction form
    909,850/1,255,187.28 = 527,655.28/x
  3. Step 3: Cross multiply
    909,850x = 1,255,187.28 × 527,655.28
  4. Step 4: Simplify right side
    909,850x = 662,306,195,680.84
  5. Step 5: Solve for x
    x = 662,306,195,680.84/909,850
  6. Step 6: Final answer
    x = 727,928.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.