Home / 581,310.12-871,688.40-221,498.76

Finding the Fourth Proportional to 581,310.12, 871,688.40 and 221,498.76

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Solution

The fourth proportional to 581,310.12, 871,688.40 and 221,498.76 is: 332,142.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    581,310.12 : 871,688.40 = 221,498.76 : x
  2. Step 2: Convert to fraction form
    581,310.12/871,688.40 = 221,498.76/x
  3. Step 3: Cross multiply
    581,310.12x = 871,688.40 × 221,498.76
  4. Step 4: Simplify right side
    581,310.12x = 193,077,899,706.38
  5. Step 5: Solve for x
    x = 193,077,899,706.38/581,310.12
  6. Step 6: Final answer
    x = 332,142.68

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Double scale
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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.