Home / 472,439.12-651,979.44-288,707.72

Finding the Fourth Proportional to 472,439.12, 651,979.44 and 288,707.72

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Solution

The fourth proportional to 472,439.12, 651,979.44 and 288,707.72 is: 398,424.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,439.12 : 651,979.44 = 288,707.72 : x
  2. Step 2: Convert to fraction form
    472,439.12/651,979.44 = 288,707.72/x
  3. Step 3: Cross multiply
    472,439.12x = 651,979.44 × 288,707.72
  4. Step 4: Simplify right side
    472,439.12x = 188,231,497,609.28
  5. Step 5: Solve for x
    x = 188,231,497,609.28/472,439.12
  6. Step 6: Final answer
    x = 398,424.88

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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.