Home / 779,815.80-1,169,723.70-380,250.90

Finding the Fourth Proportional to 779,815.80, 1,169,723.70 and 380,250.90

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Solution

The fourth proportional to 779,815.80, 1,169,723.70 and 380,250.90 is: 570,376.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,815.80 : 1,169,723.70 = 380,250.90 : x
  2. Step 2: Convert to fraction form
    779,815.80/1,169,723.70 = 380,250.90/x
  3. Step 3: Cross multiply
    779,815.80x = 1,169,723.70 × 380,250.90
  4. Step 4: Simplify right side
    779,815.80x = 444,788,489,676.33
  5. Step 5: Solve for x
    x = 444,788,489,676.33/779,815.80
  6. Step 6: Final answer
    x = 570,376.35

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Double scale
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Similar ratio
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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.