Home / 779,630.40-1,169,445.60-380,527.20

Finding the Fourth Proportional to 779,630.40, 1,169,445.60 and 380,527.20

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Solution

The fourth proportional to 779,630.40, 1,169,445.60 and 380,527.20 is: 570,790.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,630.40 : 1,169,445.60 = 380,527.20 : x
  2. Step 2: Convert to fraction form
    779,630.40/1,169,445.60 = 380,527.20/x
  3. Step 3: Cross multiply
    779,630.40x = 1,169,445.60 × 380,527.20
  4. Step 4: Simplify right side
    779,630.40x = 445,005,859,720.32
  5. Step 5: Solve for x
    x = 445,005,859,720.32/779,630.40
  6. Step 6: Final answer
    x = 570,790.80

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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.