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Finding the Fourth Proportional to 542,920.15, 813,986.56 and 364,985.83

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Solution

The fourth proportional to 542,920.15, 813,986.56 and 364,985.83 is: 547,214.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,920.15 : 813,986.56 = 364,985.83 : x
  2. Step 2: Convert to fraction form
    542,920.15/813,986.56 = 364,985.83/x
  3. Step 3: Cross multiply
    542,920.15x = 813,986.56 × 364,985.83
  4. Step 4: Simplify right side
    542,920.15x = 297,093,560,210.45
  5. Step 5: Solve for x
    x = 297,093,560,210.45/542,920.15
  6. Step 6: Final answer
    x = 547,214.10

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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.