Home / 1,119,920.90-1,680,270.15-489,028.10

Finding the Fourth Proportional to 1,119,920.90, 1,680,270.15 and 489,028.10

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Solution

The fourth proportional to 1,119,920.90, 1,680,270.15 and 489,028.10 is: 733,711.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119,920.90 : 1,680,270.15 = 489,028.10 : x
  2. Step 2: Convert to fraction form
    1,119,920.90/1,680,270.15 = 489,028.10/x
  3. Step 3: Cross multiply
    1,119,920.90x = 1,680,270.15 × 489,028.10
  4. Step 4: Simplify right side
    1,119,920.90x = 821,699,318,941.22
  5. Step 5: Solve for x
    x = 821,699,318,941.22/1,119,920.90
  6. Step 6: Final answer
    x = 733,711.92

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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.