Home / 487,682.16-672,969.78-272,785.38

Finding the Fourth Proportional to 487,682.16, 672,969.78 and 272,785.38

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Solution

The fourth proportional to 487,682.16, 672,969.78 and 272,785.38 is: 376,426.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,682.16 : 672,969.78 = 272,785.38 : x
  2. Step 2: Convert to fraction form
    487,682.16/672,969.78 = 272,785.38/x
  3. Step 3: Cross multiply
    487,682.16x = 672,969.78 × 272,785.38
  4. Step 4: Simplify right side
    487,682.16x = 183,576,317,165.82
  5. Step 5: Solve for x
    x = 183,576,317,165.82/487,682.16
  6. Step 6: Final answer
    x = 376,426.15

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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.