Home / 527,861.20-728,449.42-286,143.02

Finding the Fourth Proportional to 527,861.20, 728,449.42 and 286,143.02

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Solution

The fourth proportional to 527,861.20, 728,449.42 and 286,143.02 is: 394,877.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,861.20 : 728,449.42 = 286,143.02 : x
  2. Step 2: Convert to fraction form
    527,861.20/728,449.42 = 286,143.02/x
  3. Step 3: Cross multiply
    527,861.20x = 728,449.42 × 286,143.02
  4. Step 4: Simplify right side
    527,861.20x = 208,440,716,956.05
  5. Step 5: Solve for x
    x = 208,440,716,956.05/527,861.20
  6. Step 6: Final answer
    x = 394,877.89

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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.