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Finding the Fourth Proportional to 768,577.65, 1,060,645.65 and 424,413.11

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Solution

The fourth proportional to 768,577.65, 1,060,645.65 and 424,413.11 is: 585,694.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,577.65 : 1,060,645.65 = 424,413.11 : x
  2. Step 2: Convert to fraction form
    768,577.65/1,060,645.65 = 424,413.11/x
  3. Step 3: Cross multiply
    768,577.65x = 1,060,645.65 × 424,413.11
  4. Step 4: Simplify right side
    768,577.65x = 450,151,918,924.47
  5. Step 5: Solve for x
    x = 450,151,918,924.47/768,577.65
  6. Step 6: Final answer
    x = 585,694.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.