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Finding the Fourth Proportional to 516,363.34, 712,636.94 and 312,526.43

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Solution

The fourth proportional to 516,363.34, 712,636.94 and 312,526.43 is: 431,320.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,363.34 : 712,636.94 = 312,526.43 : x
  2. Step 2: Convert to fraction form
    516,363.34/712,636.94 = 312,526.43/x
  3. Step 3: Cross multiply
    516,363.34x = 712,636.94 × 312,526.43
  4. Step 4: Simplify right side
    516,363.34x = 222,717,878,963.28
  5. Step 5: Solve for x
    x = 222,717,878,963.28/516,363.34
  6. Step 6: Final answer
    x = 431,320.09

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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.