Home / 743,249.20-1,026,109.56-489,338.50

Finding the Fourth Proportional to 743,249.20, 1,026,109.56 and 489,338.50

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Solution

The fourth proportional to 743,249.20, 1,026,109.56 and 489,338.50 is: 675,567.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,249.20 : 1,026,109.56 = 489,338.50 : x
  2. Step 2: Convert to fraction form
    743,249.20/1,026,109.56 = 489,338.50/x
  3. Step 3: Cross multiply
    743,249.20x = 1,026,109.56 × 489,338.50
  4. Step 4: Simplify right side
    743,249.20x = 502,114,912,926.06
  5. Step 5: Solve for x
    x = 502,114,912,926.06/743,249.20
  6. Step 6: Final answer
    x = 675,567.38

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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.