Home / 839,443.20-1,259,164.80-484,274.40

Finding the Fourth Proportional to 839,443.20, 1,259,164.80 and 484,274.40

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Solution

The fourth proportional to 839,443.20, 1,259,164.80 and 484,274.40 is: 726,411.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,443.20 : 1,259,164.80 = 484,274.40 : x
  2. Step 2: Convert to fraction form
    839,443.20/1,259,164.80 = 484,274.40/x
  3. Step 3: Cross multiply
    839,443.20x = 1,259,164.80 × 484,274.40
  4. Step 4: Simplify right side
    839,443.20x = 609,781,278,021.12
  5. Step 5: Solve for x
    x = 609,781,278,021.12/839,443.20
  6. Step 6: Final answer
    x = 726,411.60

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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.