Home / 687,617.32-948,928.26-385,833.64

Finding the Fourth Proportional to 687,617.32, 948,928.26 and 385,833.64

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Solution

The fourth proportional to 687,617.32, 948,928.26 and 385,833.64 is: 532,459.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,617.32 : 948,928.26 = 385,833.64 : x
  2. Step 2: Convert to fraction form
    687,617.32/948,928.26 = 385,833.64/x
  3. Step 3: Cross multiply
    687,617.32x = 948,928.26 × 385,833.64
  4. Step 4: Simplify right side
    687,617.32x = 366,128,444,654.67
  5. Step 5: Solve for x
    x = 366,128,444,654.67/687,617.32
  6. Step 6: Final answer
    x = 532,459.60

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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.