Home / 687,629.31-948,943.98-385,823.31

Finding the Fourth Proportional to 687,629.31, 948,943.98 and 385,823.31

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Solution

The fourth proportional to 687,629.31, 948,943.98 and 385,823.31 is: 532,444.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,629.31 : 948,943.98 = 385,823.31 : x
  2. Step 2: Convert to fraction form
    687,629.31/948,943.98 = 385,823.31/x
  3. Step 3: Cross multiply
    687,629.31x = 948,943.98 × 385,823.31
  4. Step 4: Simplify right side
    687,629.31x = 366,124,707,368.17
  5. Step 5: Solve for x
    x = 366,124,707,368.17/687,629.31
  6. Step 6: Final answer
    x = 532,444.88

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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.