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Finding the Fourth Proportional to 803,944.80, 1,205,917.20 and 242,979.30

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Solution

The fourth proportional to 803,944.80, 1,205,917.20 and 242,979.30 is: 364,468.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    803,944.80 : 1,205,917.20 = 242,979.30 : x
  2. Step 2: Convert to fraction form
    803,944.80/1,205,917.20 = 242,979.30/x
  3. Step 3: Cross multiply
    803,944.80x = 1,205,917.20 × 242,979.30
  4. Step 4: Simplify right side
    803,944.80x = 293,012,917,113.96
  5. Step 5: Solve for x
    x = 293,012,917,113.96/803,944.80
  6. Step 6: Final answer
    x = 364,468.95

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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.