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Finding the Fourth Proportional to 455,528.80, 683,293.20 and 315,560.80

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Solution

The fourth proportional to 455,528.80, 683,293.20 and 315,560.80 is: 473,341.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,528.80 : 683,293.20 = 315,560.80 : x
  2. Step 2: Convert to fraction form
    455,528.80/683,293.20 = 315,560.80/x
  3. Step 3: Cross multiply
    455,528.80x = 683,293.20 × 315,560.80
  4. Step 4: Simplify right side
    455,528.80x = 215,620,548,826.56
  5. Step 5: Solve for x
    x = 215,620,548,826.56/455,528.80
  6. Step 6: Final answer
    x = 473,341.20

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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.