Home / 487,117-672,221.46-269,325.82

Finding the Fourth Proportional to 487,117, 672,221.46 and 269,325.82

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Solution

The fourth proportional to 487,117, 672,221.46 and 269,325.82 is: 371,669.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,117 : 672,221.46 = 269,325.82 : x
  2. Step 2: Convert to fraction form
    487,117/672,221.46 = 269,325.82/x
  3. Step 3: Cross multiply
    487,117x = 672,221.46 × 269,325.82
  4. Step 4: Simplify right side
    487,117x = 181,046,595,936.10
  5. Step 5: Solve for x
    x = 181,046,595,936.10/487,117
  6. Step 6: Final answer
    x = 371,669.63

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1.5x scale

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.