Home / 817,904.80-1,226,857.20-256,938.40

Finding the Fourth Proportional to 817,904.80, 1,226,857.20 and 256,938.40

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Solution

The fourth proportional to 817,904.80, 1,226,857.20 and 256,938.40 is: 385,407.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,904.80 : 1,226,857.20 = 256,938.40 : x
  2. Step 2: Convert to fraction form
    817,904.80/1,226,857.20 = 256,938.40/x
  3. Step 3: Cross multiply
    817,904.80x = 1,226,857.20 × 256,938.40
  4. Step 4: Simplify right side
    817,904.80x = 315,226,725,996.48
  5. Step 5: Solve for x
    x = 315,226,725,996.48/817,904.80
  6. Step 6: Final answer
    x = 385,407.60

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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.