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Finding the Fourth Proportional to 503,543.80, 693,566.73 and 387,034.47

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Solution

The fourth proportional to 503,543.80, 693,566.73 and 387,034.47 is: 533,090.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,543.80 : 693,566.73 = 387,034.47 : x
  2. Step 2: Convert to fraction form
    503,543.80/693,566.73 = 387,034.47/x
  3. Step 3: Cross multiply
    503,543.80x = 693,566.73 × 387,034.47
  4. Step 4: Simplify right side
    503,543.80x = 268,434,231,755.18
  5. Step 5: Solve for x
    x = 268,434,231,755.18/503,543.80
  6. Step 6: Final answer
    x = 533,090.13

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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.