Home / 780,029.40-1,170,044.10-509,424.60

Finding the Fourth Proportional to 780,029.40, 1,170,044.10 and 509,424.60

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Solution

The fourth proportional to 780,029.40, 1,170,044.10 and 509,424.60 is: 764,136.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,029.40 : 1,170,044.10 = 509,424.60 : x
  2. Step 2: Convert to fraction form
    780,029.40/1,170,044.10 = 509,424.60/x
  3. Step 3: Cross multiply
    780,029.40x = 1,170,044.10 × 509,424.60
  4. Step 4: Simplify right side
    780,029.40x = 596,049,247,624.86
  5. Step 5: Solve for x
    x = 596,049,247,624.86/780,029.40
  6. Step 6: Final answer
    x = 764,136.90

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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.