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Finding the Fourth Proportional to 542,965.80, 814,448.70 and 455,048.40

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Solution

The fourth proportional to 542,965.80, 814,448.70 and 455,048.40 is: 682,572.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,965.80 : 814,448.70 = 455,048.40 : x
  2. Step 2: Convert to fraction form
    542,965.80/814,448.70 = 455,048.40/x
  3. Step 3: Cross multiply
    542,965.80x = 814,448.70 × 455,048.40
  4. Step 4: Simplify right side
    542,965.80x = 370,613,577,817.08
  5. Step 5: Solve for x
    x = 370,613,577,817.08/542,965.80
  6. Step 6: Final answer
    x = 682,572.60

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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.