Home / 651,113.70-976,670.55-399,171.30

Finding the Fourth Proportional to 651,113.70, 976,670.55 and 399,171.30

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Solution

The fourth proportional to 651,113.70, 976,670.55 and 399,171.30 is: 598,756.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,113.70 : 976,670.55 = 399,171.30 : x
  2. Step 2: Convert to fraction form
    651,113.70/976,670.55 = 399,171.30/x
  3. Step 3: Cross multiply
    651,113.70x = 976,670.55 × 399,171.30
  4. Step 4: Simplify right side
    651,113.70x = 389,858,853,115.22
  5. Step 5: Solve for x
    x = 389,858,853,115.22/651,113.70
  6. Step 6: Final answer
    x = 598,756.95

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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.