Home / 817,963.80-1,226,945.70-219,017.40

Finding the Fourth Proportional to 817,963.80, 1,226,945.70 and 219,017.40

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Solution

The fourth proportional to 817,963.80, 1,226,945.70 and 219,017.40 is: 328,526.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,963.80 : 1,226,945.70 = 219,017.40 : x
  2. Step 2: Convert to fraction form
    817,963.80/1,226,945.70 = 219,017.40/x
  3. Step 3: Cross multiply
    817,963.80x = 1,226,945.70 × 219,017.40
  4. Step 4: Simplify right side
    817,963.80x = 268,722,457,155.18
  5. Step 5: Solve for x
    x = 268,722,457,155.18/817,963.80
  6. Step 6: Final answer
    x = 328,526.10

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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.