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Finding the Fourth Proportional to 542,838.60, 814,257.90 and 402,870.60

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Solution

The fourth proportional to 542,838.60, 814,257.90 and 402,870.60 is: 604,305.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,838.60 : 814,257.90 = 402,870.60 : x
  2. Step 2: Convert to fraction form
    542,838.60/814,257.90 = 402,870.60/x
  3. Step 3: Cross multiply
    542,838.60x = 814,257.90 × 402,870.60
  4. Step 4: Simplify right side
    542,838.60x = 328,040,568,727.74
  5. Step 5: Solve for x
    x = 328,040,568,727.74/542,838.60
  6. Step 6: Final answer
    x = 604,305.90

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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.