Home / 1,121,440.59-1,681,569.78-489,616.29

Finding the Fourth Proportional to 1,121,440.59, 1,681,569.78 and 489,616.29

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Solution

The fourth proportional to 1,121,440.59, 1,681,569.78 and 489,616.29 is: 734,166.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,440.59 : 1,681,569.78 = 489,616.29 : x
  2. Step 2: Convert to fraction form
    1,121,440.59/1,681,569.78 = 489,616.29/x
  3. Step 3: Cross multiply
    1,121,440.59x = 1,681,569.78 × 489,616.29
  4. Step 4: Simplify right side
    1,121,440.59x = 823,323,957,059.72
  5. Step 5: Solve for x
    x = 823,323,957,059.72/1,121,440.59
  6. Step 6: Final answer
    x = 734,166.36

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1.5x scale

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.