Home / 912,010.80-1,368,016.20-613,412.40

Finding the Fourth Proportional to 912,010.80, 1,368,016.20 and 613,412.40

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Solution

The fourth proportional to 912,010.80, 1,368,016.20 and 613,412.40 is: 920,118.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,010.80 : 1,368,016.20 = 613,412.40 : x
  2. Step 2: Convert to fraction form
    912,010.80/1,368,016.20 = 613,412.40/x
  3. Step 3: Cross multiply
    912,010.80x = 1,368,016.20 × 613,412.40
  4. Step 4: Simplify right side
    912,010.80x = 839,158,100,480.88
  5. Step 5: Solve for x
    x = 839,158,100,480.88/912,010.80
  6. Step 6: Final answer
    x = 920,118.60

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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.