Home / 288,520.30-432,780.45-284,583.70

Finding the Fourth Proportional to 288,520.30, 432,780.45 and 284,583.70

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Solution

The fourth proportional to 288,520.30, 432,780.45 and 284,583.70 is: 426,875.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,520.30 : 432,780.45 = 284,583.70 : x
  2. Step 2: Convert to fraction form
    288,520.30/432,780.45 = 284,583.70/x
  3. Step 3: Cross multiply
    288,520.30x = 432,780.45 × 284,583.70
  4. Step 4: Simplify right side
    288,520.30x = 123,162,261,748.67
  5. Step 5: Solve for x
    x = 123,162,261,748.67/288,520.30
  6. Step 6: Final answer
    x = 426,875.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.