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Finding the Fourth Proportional to 788,707.80, 1,182,770.10 and 256,246.20

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Solution

The fourth proportional to 788,707.80, 1,182,770.10 and 256,246.20 is: 384,274.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,707.80 : 1,182,770.10 = 256,246.20 : x
  2. Step 2: Convert to fraction form
    788,707.80/1,182,770.10 = 256,246.20/x
  3. Step 3: Cross multiply
    788,707.80x = 1,182,770.10 × 256,246.20
  4. Step 4: Simplify right side
    788,707.80x = 303,080,343,598.62
  5. Step 5: Solve for x
    x = 303,080,343,598.62/788,707.80
  6. Step 6: Final answer
    x = 384,274.56

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Double scale
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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.