Home / 687,188.64-948,317.04-385,382.64

Finding the Fourth Proportional to 687,188.64, 948,317.04 and 385,382.64

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Solution

The fourth proportional to 687,188.64, 948,317.04 and 385,382.64 is: 531,826.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,188.64 : 948,317.04 = 385,382.64 : x
  2. Step 2: Convert to fraction form
    687,188.64/948,317.04 = 385,382.64/x
  3. Step 3: Cross multiply
    687,188.64x = 948,317.04 × 385,382.64
  4. Step 4: Simplify right side
    687,188.64x = 365,464,924,432.19
  5. Step 5: Solve for x
    x = 365,464,924,432.19/687,188.64
  6. Step 6: Final answer
    x = 531,826.20

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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.