Home / 420,718.48-580,591.45-229,732.05

Finding the Fourth Proportional to 420,718.48, 580,591.45 and 229,732.05

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Solution

The fourth proportional to 420,718.48, 580,591.45 and 229,732.05 is: 317,030.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,718.48 : 580,591.45 = 229,732.05 : x
  2. Step 2: Convert to fraction form
    420,718.48/580,591.45 = 229,732.05/x
  3. Step 3: Cross multiply
    420,718.48x = 580,591.45 × 229,732.05
  4. Step 4: Simplify right side
    420,718.48x = 133,380,464,020.97
  5. Step 5: Solve for x
    x = 133,380,464,020.97/420,718.48
  6. Step 6: Final answer
    x = 317,030.20

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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.