Home / 743,242.20-1,026,099.90-489,331.50

Finding the Fourth Proportional to 743,242.20, 1,026,099.90 and 489,331.50

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Solution

The fourth proportional to 743,242.20, 1,026,099.90 and 489,331.50 is: 675,557.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,242.20 : 1,026,099.90 = 489,331.50 : x
  2. Step 2: Convert to fraction form
    743,242.20/1,026,099.90 = 489,331.50/x
  3. Step 3: Cross multiply
    743,242.20x = 1,026,099.90 × 489,331.50
  4. Step 4: Simplify right side
    743,242.20x = 502,103,003,216.85
  5. Step 5: Solve for x
    x = 502,103,003,216.85/743,242.20
  6. Step 6: Final answer
    x = 675,557.72

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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.