Home / 859,614.10-1,289,421.15-434,461.30

Finding the Fourth Proportional to 859,614.10, 1,289,421.15 and 434,461.30

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Solution

The fourth proportional to 859,614.10, 1,289,421.15 and 434,461.30 is: 651,691.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,614.10 : 1,289,421.15 = 434,461.30 : x
  2. Step 2: Convert to fraction form
    859,614.10/1,289,421.15 = 434,461.30/x
  3. Step 3: Cross multiply
    859,614.10x = 1,289,421.15 × 434,461.30
  4. Step 4: Simplify right side
    859,614.10x = 560,203,589,076.50
  5. Step 5: Solve for x
    x = 560,203,589,076.50/859,614.10
  6. Step 6: Final answer
    x = 651,691.95

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Double scale
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Similar ratio
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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.