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Finding the Fourth Proportional to 909,854, 1,255,192.80 and 527,659.28

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Solution

The fourth proportional to 909,854, 1,255,192.80 and 527,659.28 is: 727,934.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,854 : 1,255,192.80 = 527,659.28 : x
  2. Step 2: Convert to fraction form
    909,854/1,255,192.80 = 527,659.28/x
  3. Step 3: Cross multiply
    909,854x = 1,255,192.80 × 527,659.28
  4. Step 4: Simplify right side
    909,854x = 662,314,129,109.18
  5. Step 5: Solve for x
    x = 662,314,129,109.18/909,854
  6. Step 6: Final answer
    x = 727,934.51

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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.