Home / 420,715.48-580,587.32-229,729.04

Finding the Fourth Proportional to 420,715.48, 580,587.32 and 229,729.04

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Solution

The fourth proportional to 420,715.48, 580,587.32 and 229,729.04 is: 317,026.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,715.48 : 580,587.32 = 229,729.04 : x
  2. Step 2: Convert to fraction form
    420,715.48/580,587.32 = 229,729.04/x
  3. Step 3: Cross multiply
    420,715.48x = 580,587.32 × 229,729.04
  4. Step 4: Simplify right side
    420,715.48x = 133,377,767,659.77
  5. Step 5: Solve for x
    x = 133,377,767,659.77/420,715.48
  6. Step 6: Final answer
    x = 317,026.05

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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.