Home / 780,573.20-1,169,110.20-640,605.20

Finding the Fourth Proportional to 780,573.20, 1,169,110.20 and 640,605.20

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Solution

The fourth proportional to 780,573.20, 1,169,110.20 and 640,605.20 is: 959,471.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,573.20 : 1,169,110.20 = 640,605.20 : x
  2. Step 2: Convert to fraction form
    780,573.20/1,169,110.20 = 640,605.20/x
  3. Step 3: Cross multiply
    780,573.20x = 1,169,110.20 × 640,605.20
  4. Step 4: Simplify right side
    780,573.20x = 748,938,073,493.04
  5. Step 5: Solve for x
    x = 748,938,073,493.04/780,573.20
  6. Step 6: Final answer
    x = 959,471.93

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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.