Home / 1,209,637.40-1,814,456.10-411,819.80

Finding the Fourth Proportional to 1,209,637.40, 1,814,456.10 and 411,819.80

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Solution

The fourth proportional to 1,209,637.40, 1,814,456.10 and 411,819.80 is: 617,729.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,637.40 : 1,814,456.10 = 411,819.80 : x
  2. Step 2: Convert to fraction form
    1,209,637.40/1,814,456.10 = 411,819.80/x
  3. Step 3: Cross multiply
    1,209,637.40x = 1,814,456.10 × 411,819.80
  4. Step 4: Simplify right side
    1,209,637.40x = 747,228,948,210.78
  5. Step 5: Solve for x
    x = 747,228,948,210.78/1,209,637.40
  6. Step 6: Final answer
    x = 617,729.70

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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.