Home / 857,451.16-1,286,227.24-288,784.72

Finding the Fourth Proportional to 857,451.16, 1,286,227.24 and 288,784.72

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Solution

The fourth proportional to 857,451.16, 1,286,227.24 and 288,784.72 is: 433,194.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,451.16 : 1,286,227.24 = 288,784.72 : x
  2. Step 2: Convert to fraction form
    857,451.16/1,286,227.24 = 288,784.72/x
  3. Step 3: Cross multiply
    857,451.16x = 1,286,227.24 × 288,784.72
  4. Step 4: Simplify right side
    857,451.16x = 371,442,773,359.77
  5. Step 5: Solve for x
    x = 371,442,773,359.77/857,451.16
  6. Step 6: Final answer
    x = 433,194.09

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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.