Home / 780,020.40-1,170,030.60-647,050.80

Finding the Fourth Proportional to 780,020.40, 1,170,030.60 and 647,050.80

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Solution

The fourth proportional to 780,020.40, 1,170,030.60 and 647,050.80 is: 970,576.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,020.40 : 1,170,030.60 = 647,050.80 : x
  2. Step 2: Convert to fraction form
    780,020.40/1,170,030.60 = 647,050.80/x
  3. Step 3: Cross multiply
    780,020.40x = 1,170,030.60 × 647,050.80
  4. Step 4: Simplify right side
    780,020.40x = 757,069,235,754.48
  5. Step 5: Solve for x
    x = 757,069,235,754.48/780,020.40
  6. Step 6: Final answer
    x = 970,576.20

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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.