Home / 687,744.32-949,155.36-385,939.52

Finding the Fourth Proportional to 687,744.32, 949,155.36 and 385,939.52

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Solution

The fourth proportional to 687,744.32, 949,155.36 and 385,939.52 is: 532,634.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,744.32 : 949,155.36 = 385,939.52 : x
  2. Step 2: Convert to fraction form
    687,744.32/949,155.36 = 385,939.52/x
  3. Step 3: Cross multiply
    687,744.32x = 949,155.36 × 385,939.52
  4. Step 4: Simplify right side
    687,744.32x = 366,316,564,043.83
  5. Step 5: Solve for x
    x = 366,316,564,043.83/687,744.32
  6. Step 6: Final answer
    x = 532,634.81

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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.