Home / 805,840.80-1,207,724.40-489,962.40

Finding the Fourth Proportional to 805,840.80, 1,207,724.40 and 489,962.40

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Solution

The fourth proportional to 805,840.80, 1,207,724.40 and 489,962.40 is: 734,313.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,840.80 : 1,207,724.40 = 489,962.40 : x
  2. Step 2: Convert to fraction form
    805,840.80/1,207,724.40 = 489,962.40/x
  3. Step 3: Cross multiply
    805,840.80x = 1,207,724.40 × 489,962.40
  4. Step 4: Simplify right side
    805,840.80x = 591,739,545,562.56
  5. Step 5: Solve for x
    x = 591,739,545,562.56/805,840.80
  6. Step 6: Final answer
    x = 734,313.21

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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.