Home / 851,819.13-1,175,511.39-489,313.20

Finding the Fourth Proportional to 851,819.13, 1,175,511.39 and 489,313.20

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Solution

The fourth proportional to 851,819.13, 1,175,511.39 and 489,313.20 is: 675,252.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,819.13 : 1,175,511.39 = 489,313.20 : x
  2. Step 2: Convert to fraction form
    851,819.13/1,175,511.39 = 489,313.20/x
  3. Step 3: Cross multiply
    851,819.13x = 1,175,511.39 × 489,313.20
  4. Step 4: Simplify right side
    851,819.13x = 575,193,239,877.35
  5. Step 5: Solve for x
    x = 575,193,239,877.35/851,819.13
  6. Step 6: Final answer
    x = 675,252.79

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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.