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Finding the Fourth Proportional to 508,407.95, 701,579.43 and 278,959.52

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Solution

The fourth proportional to 508,407.95, 701,579.43 and 278,959.52 is: 384,951.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,407.95 : 701,579.43 = 278,959.52 : x
  2. Step 2: Convert to fraction form
    508,407.95/701,579.43 = 278,959.52/x
  3. Step 3: Cross multiply
    508,407.95x = 701,579.43 × 278,959.52
  4. Step 4: Simplify right side
    508,407.95x = 195,712,261,034.67
  5. Step 5: Solve for x
    x = 195,712,261,034.67/508,407.95
  6. Step 6: Final answer
    x = 384,951.22

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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.