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Finding the Fourth Proportional to 647,041.20, 970,561.80 and 618,010.80

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Solution

The fourth proportional to 647,041.20, 970,561.80 and 618,010.80 is: 927,016.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,041.20 : 970,561.80 = 618,010.80 : x
  2. Step 2: Convert to fraction form
    647,041.20/970,561.80 = 618,010.80/x
  3. Step 3: Cross multiply
    647,041.20x = 970,561.80 × 618,010.80
  4. Step 4: Simplify right side
    647,041.20x = 599,817,674,467.44
  5. Step 5: Solve for x
    x = 599,817,674,467.44/647,041.20
  6. Step 6: Final answer
    x = 927,016.20

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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.