Home / 930,909.40-1,396,364.10-612,044.80

Finding the Fourth Proportional to 930,909.40, 1,396,364.10 and 612,044.80

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Solution

The fourth proportional to 930,909.40, 1,396,364.10 and 612,044.80 is: 918,067.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    930,909.40 : 1,396,364.10 = 612,044.80 : x
  2. Step 2: Convert to fraction form
    930,909.40/1,396,364.10 = 612,044.80/x
  3. Step 3: Cross multiply
    930,909.40x = 1,396,364.10 × 612,044.80
  4. Step 4: Simplify right side
    930,909.40x = 854,637,386,311.68
  5. Step 5: Solve for x
    x = 854,637,386,311.68/930,909.40
  6. Step 6: Final answer
    x = 918,067.20

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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.