Home / 809,138.80-1,215,020.40-586,064.80

Finding the Fourth Proportional to 809,138.80, 1,215,020.40 and 586,064.80

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Solution

The fourth proportional to 809,138.80, 1,215,020.40 and 586,064.80 is: 880,047.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,138.80 : 1,215,020.40 = 586,064.80 : x
  2. Step 2: Convert to fraction form
    809,138.80/1,215,020.40 = 586,064.80/x
  3. Step 3: Cross multiply
    809,138.80x = 1,215,020.40 × 586,064.80
  4. Step 4: Simplify right side
    809,138.80x = 712,080,687,721.92
  5. Step 5: Solve for x
    x = 712,080,687,721.92/809,138.80
  6. Step 6: Final answer
    x = 880,047.64

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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.