Home / 817,942.40-1,226,827.20-256,947.20

Finding the Fourth Proportional to 817,942.40, 1,226,827.20 and 256,947.20

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Solution

The fourth proportional to 817,942.40, 1,226,827.20 and 256,947.20 is: 385,393.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,942.40 : 1,226,827.20 = 256,947.20 : x
  2. Step 2: Convert to fraction form
    817,942.40/1,226,827.20 = 256,947.20/x
  3. Step 3: Cross multiply
    817,942.40x = 1,226,827.20 × 256,947.20
  4. Step 4: Simplify right side
    817,942.40x = 315,229,813,923.84
  5. Step 5: Solve for x
    x = 315,229,813,923.84/817,942.40
  6. Step 6: Final answer
    x = 385,393.66

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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.