Home / 898,739.57-1,240,209.87-490,760.21

Finding the Fourth Proportional to 898,739.57, 1,240,209.87 and 490,760.21

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Solution

The fourth proportional to 898,739.57, 1,240,209.87 and 490,760.21 is: 677,221.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,739.57 : 1,240,209.87 = 490,760.21 : x
  2. Step 2: Convert to fraction form
    898,739.57/1,240,209.87 = 490,760.21/x
  3. Step 3: Cross multiply
    898,739.57x = 1,240,209.87 × 490,760.21
  4. Step 4: Simplify right side
    898,739.57x = 608,645,656,245.27
  5. Step 5: Solve for x
    x = 608,645,656,245.27/898,739.57
  6. Step 6: Final answer
    x = 677,221.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.