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Finding the Fourth Proportional to 555,916.47, 767,247 and 351,986.32

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Solution

The fourth proportional to 555,916.47, 767,247 and 351,986.32 is: 485,793.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,916.47 : 767,247 = 351,986.32 : x
  2. Step 2: Convert to fraction form
    555,916.47/767,247 = 351,986.32/x
  3. Step 3: Cross multiply
    555,916.47x = 767,247 × 351,986.32
  4. Step 4: Simplify right side
    555,916.47x = 270,060,448,061.04
  5. Step 5: Solve for x
    x = 270,060,448,061.04/555,916.47
  6. Step 6: Final answer
    x = 485,793.21

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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.