Home / 891,785.60-1,337,678.40-418,518.80

Finding the Fourth Proportional to 891,785.60, 1,337,678.40 and 418,518.80

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Solution

The fourth proportional to 891,785.60, 1,337,678.40 and 418,518.80 is: 627,778.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,785.60 : 1,337,678.40 = 418,518.80 : x
  2. Step 2: Convert to fraction form
    891,785.60/1,337,678.40 = 418,518.80/x
  3. Step 3: Cross multiply
    891,785.60x = 1,337,678.40 × 418,518.80
  4. Step 4: Simplify right side
    891,785.60x = 559,843,558,753.92
  5. Step 5: Solve for x
    x = 559,843,558,753.92/891,785.60
  6. Step 6: Final answer
    x = 627,778.20

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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.