Home / 743,118.50-1,025,566.77-420,885.92

Finding the Fourth Proportional to 743,118.50, 1,025,566.77 and 420,885.92

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Solution

The fourth proportional to 743,118.50, 1,025,566.77 and 420,885.92 is: 580,858.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,118.50 : 1,025,566.77 = 420,885.92 : x
  2. Step 2: Convert to fraction form
    743,118.50/1,025,566.77 = 420,885.92/x
  3. Step 3: Cross multiply
    743,118.50x = 1,025,566.77 × 420,885.92
  4. Step 4: Simplify right side
    743,118.50x = 431,646,608,385.05
  5. Step 5: Solve for x
    x = 431,646,608,385.05/743,118.50
  6. Step 6: Final answer
    x = 580,858.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.