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Finding the Fourth Proportional to 788,959.80, 1,183,148.10 and 256,498.20

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Solution

The fourth proportional to 788,959.80, 1,183,148.10 and 256,498.20 is: 384,652.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,959.80 : 1,183,148.10 = 256,498.20 : x
  2. Step 2: Convert to fraction form
    788,959.80/1,183,148.10 = 256,498.20/x
  3. Step 3: Cross multiply
    788,959.80x = 1,183,148.10 × 256,498.20
  4. Step 4: Simplify right side
    788,959.80x = 303,475,357,983.42
  5. Step 5: Solve for x
    x = 303,475,357,983.42/788,959.80
  6. Step 6: Final answer
    x = 384,652.50

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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.