Home / 727,718.40-1,091,577.60-489,772.80

Finding the Fourth Proportional to 727,718.40, 1,091,577.60 and 489,772.80

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Solution

The fourth proportional to 727,718.40, 1,091,577.60 and 489,772.80 is: 734,659.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,718.40 : 1,091,577.60 = 489,772.80 : x
  2. Step 2: Convert to fraction form
    727,718.40/1,091,577.60 = 489,772.80/x
  3. Step 3: Cross multiply
    727,718.40x = 1,091,577.60 × 489,772.80
  4. Step 4: Simplify right side
    727,718.40x = 534,625,017,569.28
  5. Step 5: Solve for x
    x = 534,625,017,569.28/727,718.40
  6. Step 6: Final answer
    x = 734,659.20

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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.