Home / 687,616.32-948,926.88-385,832.64

Finding the Fourth Proportional to 687,616.32, 948,926.88 and 385,832.64

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Solution

The fourth proportional to 687,616.32, 948,926.88 and 385,832.64 is: 532,458.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,616.32 : 948,926.88 = 385,832.64 : x
  2. Step 2: Convert to fraction form
    687,616.32/948,926.88 = 385,832.64/x
  3. Step 3: Cross multiply
    687,616.32x = 948,926.88 × 385,832.64
  4. Step 4: Simplify right side
    687,616.32x = 366,126,963,277.36
  5. Step 5: Solve for x
    x = 366,126,963,277.36/687,616.32
  6. Step 6: Final answer
    x = 532,458.22

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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.