Home / 486,972.39-672,088.64-280,236.52

Finding the Fourth Proportional to 486,972.39, 672,088.64 and 280,236.52

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Solution

The fourth proportional to 486,972.39, 672,088.64 and 280,236.52 is: 386,764.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,972.39 : 672,088.64 = 280,236.52 : x
  2. Step 2: Convert to fraction form
    486,972.39/672,088.64 = 280,236.52/x
  3. Step 3: Cross multiply
    486,972.39x = 672,088.64 × 280,236.52
  4. Step 4: Simplify right side
    486,972.39x = 188,343,781,605.13
  5. Step 5: Solve for x
    x = 188,343,781,605.13/486,972.39
  6. Step 6: Final answer
    x = 386,764.81

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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.