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Finding the Fourth Proportional to 545,902.80, 818,854.20 and 457,329.30

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Solution

The fourth proportional to 545,902.80, 818,854.20 and 457,329.30 is: 685,993.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,902.80 : 818,854.20 = 457,329.30 : x
  2. Step 2: Convert to fraction form
    545,902.80/818,854.20 = 457,329.30/x
  3. Step 3: Cross multiply
    545,902.80x = 818,854.20 × 457,329.30
  4. Step 4: Simplify right side
    545,902.80x = 374,486,018,088.06
  5. Step 5: Solve for x
    x = 374,486,018,088.06/545,902.80
  6. Step 6: Final answer
    x = 685,993.95

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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.