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Finding the Fourth Proportional to 567,490.17, 783,141.69 and 312,850.47

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Solution

The fourth proportional to 567,490.17, 783,141.69 and 312,850.47 is: 431,736.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,490.17 : 783,141.69 = 312,850.47 : x
  2. Step 2: Convert to fraction form
    567,490.17/783,141.69 = 312,850.47/x
  3. Step 3: Cross multiply
    567,490.17x = 783,141.69 × 312,850.47
  4. Step 4: Simplify right side
    567,490.17x = 245,006,245,793.09
  5. Step 5: Solve for x
    x = 245,006,245,793.09/567,490.17
  6. Step 6: Final answer
    x = 431,736.55

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1.5x scale

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.