Home / 385,629.90-577,691.52-265,665.66

Finding the Fourth Proportional to 385,629.90, 577,691.52 and 265,665.66

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Solution

The fourth proportional to 385,629.90, 577,691.52 and 265,665.66 is: 397,979.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,629.90 : 577,691.52 = 265,665.66 : x
  2. Step 2: Convert to fraction form
    385,629.90/577,691.52 = 265,665.66/x
  3. Step 3: Cross multiply
    385,629.90x = 577,691.52 × 265,665.66
  4. Step 4: Simplify right side
    385,629.90x = 153,472,798,937.20
  5. Step 5: Solve for x
    x = 153,472,798,937.20/385,629.90
  6. Step 6: Final answer
    x = 397,979.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.