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Finding the Fourth Proportional to 780,572.95, 1,171,879.14 and 626,781.07

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Solution

The fourth proportional to 780,572.95, 1,171,879.14 and 626,781.07 is: 940,990.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,572.95 : 1,171,879.14 = 626,781.07 : x
  2. Step 2: Convert to fraction form
    780,572.95/1,171,879.14 = 626,781.07/x
  3. Step 3: Cross multiply
    780,572.95x = 1,171,879.14 × 626,781.07
  4. Step 4: Simplify right side
    780,572.95x = 734,511,665,095.16
  5. Step 5: Solve for x
    x = 734,511,665,095.16/780,572.95
  6. Step 6: Final answer
    x = 940,990.41

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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.