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Finding the Fourth Proportional to 555,413.31, 766,498.28 and 325,980.54

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Solution

The fourth proportional to 555,413.31, 766,498.28 and 325,980.54 is: 449,869.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,413.31 : 766,498.28 = 325,980.54 : x
  2. Step 2: Convert to fraction form
    555,413.31/766,498.28 = 325,980.54/x
  3. Step 3: Cross multiply
    555,413.31x = 766,498.28 × 325,980.54
  4. Step 4: Simplify right side
    555,413.31x = 249,863,521,593.57
  5. Step 5: Solve for x
    x = 249,863,521,593.57/555,413.31
  6. Step 6: Final answer
    x = 449,869.52

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1.5x scale

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.