Home / 779,999.80-1,169,999.70-442,910.20

Finding the Fourth Proportional to 779,999.80, 1,169,999.70 and 442,910.20

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Solution

The fourth proportional to 779,999.80, 1,169,999.70 and 442,910.20 is: 664,365.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,999.80 : 1,169,999.70 = 442,910.20 : x
  2. Step 2: Convert to fraction form
    779,999.80/1,169,999.70 = 442,910.20/x
  3. Step 3: Cross multiply
    779,999.80x = 1,169,999.70 × 442,910.20
  4. Step 4: Simplify right side
    779,999.80x = 518,204,801,126.94
  5. Step 5: Solve for x
    x = 518,204,801,126.94/779,999.80
  6. Step 6: Final answer
    x = 664,365.30

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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.