Home / 460,923.60-691,385.40-287,864.40

Finding the Fourth Proportional to 460,923.60, 691,385.40 and 287,864.40

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Solution

The fourth proportional to 460,923.60, 691,385.40 and 287,864.40 is: 431,796.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    460,923.60 : 691,385.40 = 287,864.40 : x
  2. Step 2: Convert to fraction form
    460,923.60/691,385.40 = 287,864.40/x
  3. Step 3: Cross multiply
    460,923.60x = 691,385.40 × 287,864.40
  4. Step 4: Simplify right side
    460,923.60x = 199,025,243,339.76
  5. Step 5: Solve for x
    x = 199,025,243,339.76/460,923.60
  6. Step 6: Final answer
    x = 431,796.60

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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.