Home / 780,040.40-1,170,060.60-360,136.40

Finding the Fourth Proportional to 780,040.40, 1,170,060.60 and 360,136.40

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Solution

The fourth proportional to 780,040.40, 1,170,060.60 and 360,136.40 is: 540,204.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,040.40 : 1,170,060.60 = 360,136.40 : x
  2. Step 2: Convert to fraction form
    780,040.40/1,170,060.60 = 360,136.40/x
  3. Step 3: Cross multiply
    780,040.40x = 1,170,060.60 × 360,136.40
  4. Step 4: Simplify right side
    780,040.40x = 421,381,412,265.84
  5. Step 5: Solve for x
    x = 421,381,412,265.84/780,040.40
  6. Step 6: Final answer
    x = 540,204.60

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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.