Home / 1,287,941.90-1,931,850.50-489,161.10

Finding the Fourth Proportional to 1,287,941.90, 1,931,850.50 and 489,161.10

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Solution

The fourth proportional to 1,287,941.90, 1,931,850.50 and 489,161.10 is: 733,717.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,941.90 : 1,931,850.50 = 489,161.10 : x
  2. Step 2: Convert to fraction form
    1,287,941.90/1,931,850.50 = 489,161.10/x
  3. Step 3: Cross multiply
    1,287,941.90x = 1,931,850.50 × 489,161.10
  4. Step 4: Simplify right side
    1,287,941.90x = 944,986,113,169.75
  5. Step 5: Solve for x
    x = 944,986,113,169.75/1,287,941.90
  6. Step 6: Final answer
    x = 733,717.97

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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.