Home / 1,240,690.80-1,861,036.20-442,873.20

Finding the Fourth Proportional to 1,240,690.80, 1,861,036.20 and 442,873.20

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Solution

The fourth proportional to 1,240,690.80, 1,861,036.20 and 442,873.20 is: 664,309.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240,690.80 : 1,861,036.20 = 442,873.20 : x
  2. Step 2: Convert to fraction form
    1,240,690.80/1,861,036.20 = 442,873.20/x
  3. Step 3: Cross multiply
    1,240,690.80x = 1,861,036.20 × 442,873.20
  4. Step 4: Simplify right side
    1,240,690.80x = 824,203,057,209.84
  5. Step 5: Solve for x
    x = 824,203,057,209.84/1,240,690.80
  6. Step 6: Final answer
    x = 664,309.80

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Double scale
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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.