Home / 687,751.32-949,165.02-385,946.52

Finding the Fourth Proportional to 687,751.32, 949,165.02 and 385,946.52

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Solution

The fourth proportional to 687,751.32, 949,165.02 and 385,946.52 is: 532,644.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,751.32 : 949,165.02 = 385,946.52 : x
  2. Step 2: Convert to fraction form
    687,751.32/949,165.02 = 385,946.52/x
  3. Step 3: Cross multiply
    687,751.32x = 949,165.02 × 385,946.52
  4. Step 4: Simplify right side
    687,751.32x = 366,326,936,374.73
  5. Step 5: Solve for x
    x = 366,326,936,374.73/687,751.32
  6. Step 6: Final answer
    x = 532,644.47

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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.