Home / 420,467.52-580,240.64-229,479.36

Finding the Fourth Proportional to 420,467.52, 580,240.64 and 229,479.36

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Solution

The fourth proportional to 420,467.52, 580,240.64 and 229,479.36 is: 316,679.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,467.52 : 580,240.64 = 229,479.36 : x
  2. Step 2: Convert to fraction form
    420,467.52/580,240.64 = 229,479.36/x
  3. Step 3: Cross multiply
    420,467.52x = 580,240.64 × 229,479.36
  4. Step 4: Simplify right side
    420,467.52x = 133,153,250,713.19
  5. Step 5: Solve for x
    x = 133,153,250,713.19/420,467.52
  6. Step 6: Final answer
    x = 316,679.04

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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.