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Finding the Fourth Proportional to 786,751.80, 1,180,127.70 and 254,654.70

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Solution

The fourth proportional to 786,751.80, 1,180,127.70 and 254,654.70 is: 381,982.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,751.80 : 1,180,127.70 = 254,654.70 : x
  2. Step 2: Convert to fraction form
    786,751.80/1,180,127.70 = 254,654.70/x
  3. Step 3: Cross multiply
    786,751.80x = 1,180,127.70 × 254,654.70
  4. Step 4: Simplify right side
    786,751.80x = 300,525,065,405.19
  5. Step 5: Solve for x
    x = 300,525,065,405.19/786,751.80
  6. Step 6: Final answer
    x = 381,982.05

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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.