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Finding the Fourth Proportional to 545,843.80, 818,765.70 and 495,980.20

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Solution

The fourth proportional to 545,843.80, 818,765.70 and 495,980.20 is: 743,970.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,843.80 : 818,765.70 = 495,980.20 : x
  2. Step 2: Convert to fraction form
    545,843.80/818,765.70 = 495,980.20/x
  3. Step 3: Cross multiply
    545,843.80x = 818,765.70 × 495,980.20
  4. Step 4: Simplify right side
    545,843.80x = 406,091,575,639.14
  5. Step 5: Solve for x
    x = 406,091,575,639.14/545,843.80
  6. Step 6: Final answer
    x = 743,970.30

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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.