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Finding the Fourth Proportional to 835,345.80, 1,253,018.70 and 274,398.60

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Solution

The fourth proportional to 835,345.80, 1,253,018.70 and 274,398.60 is: 411,597.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    835,345.80 : 1,253,018.70 = 274,398.60 : x
  2. Step 2: Convert to fraction form
    835,345.80/1,253,018.70 = 274,398.60/x
  3. Step 3: Cross multiply
    835,345.80x = 1,253,018.70 × 274,398.60
  4. Step 4: Simplify right side
    835,345.80x = 343,826,577,053.82
  5. Step 5: Solve for x
    x = 343,826,577,053.82/835,345.80
  6. Step 6: Final answer
    x = 411,597.90

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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.