Home / 651,144.30-976,716.45-385,205.10

Finding the Fourth Proportional to 651,144.30, 976,716.45 and 385,205.10

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Solution

The fourth proportional to 651,144.30, 976,716.45 and 385,205.10 is: 577,807.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,144.30 : 976,716.45 = 385,205.10 : x
  2. Step 2: Convert to fraction form
    651,144.30/976,716.45 = 385,205.10/x
  3. Step 3: Cross multiply
    651,144.30x = 976,716.45 × 385,205.10
  4. Step 4: Simplify right side
    651,144.30x = 376,236,157,793.90
  5. Step 5: Solve for x
    x = 376,236,157,793.90/651,144.30
  6. Step 6: Final answer
    x = 577,807.65

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Half scale
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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.