Home / 780,026.40-1,170,039.60-380,923.20

Finding the Fourth Proportional to 780,026.40, 1,170,039.60 and 380,923.20

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Solution

The fourth proportional to 780,026.40, 1,170,039.60 and 380,923.20 is: 571,384.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,026.40 : 1,170,039.60 = 380,923.20 : x
  2. Step 2: Convert to fraction form
    780,026.40/1,170,039.60 = 380,923.20/x
  3. Step 3: Cross multiply
    780,026.40x = 1,170,039.60 × 380,923.20
  4. Step 4: Simplify right side
    780,026.40x = 445,695,228,558.72
  5. Step 5: Solve for x
    x = 445,695,228,558.72/780,026.40
  6. Step 6: Final answer
    x = 571,384.80

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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.