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Finding the Fourth Proportional to 555,061.92, 765,985.44 and 300,413.12

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Solution

The fourth proportional to 555,061.92, 765,985.44 and 300,413.12 is: 414,570.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,061.92 : 765,985.44 = 300,413.12 : x
  2. Step 2: Convert to fraction form
    555,061.92/765,985.44 = 300,413.12/x
  3. Step 3: Cross multiply
    555,061.92x = 765,985.44 × 300,413.12
  4. Step 4: Simplify right side
    555,061.92x = 230,112,075,904.97
  5. Step 5: Solve for x
    x = 230,112,075,904.97/555,061.92
  6. Step 6: Final answer
    x = 414,570.10

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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.