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Finding the Fourth Proportional to 517,245.48, 713,752.56 and 287,795.16

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Solution

The fourth proportional to 517,245.48, 713,752.56 and 287,795.16 is: 397,131.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,245.48 : 713,752.56 = 287,795.16 : x
  2. Step 2: Convert to fraction form
    517,245.48/713,752.56 = 287,795.16/x
  3. Step 3: Cross multiply
    517,245.48x = 713,752.56 × 287,795.16
  4. Step 4: Simplify right side
    517,245.48x = 205,414,532,205.61
  5. Step 5: Solve for x
    x = 205,414,532,205.61/517,245.48
  6. Step 6: Final answer
    x = 397,131.61

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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.