Home / 1,288,099.40-1,931,565.90-489,115.40

Finding the Fourth Proportional to 1,288,099.40, 1,931,565.90 and 489,115.40

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Solution

The fourth proportional to 1,288,099.40, 1,931,565.90 and 489,115.40 is: 733,451.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,099.40 : 1,931,565.90 = 489,115.40 : x
  2. Step 2: Convert to fraction form
    1,288,099.40/1,931,565.90 = 489,115.40/x
  3. Step 3: Cross multiply
    1,288,099.40x = 1,931,565.90 × 489,115.40
  4. Step 4: Simplify right side
    1,288,099.40x = 944,758,627,804.86
  5. Step 5: Solve for x
    x = 944,758,627,804.86/1,288,099.40
  6. Step 6: Final answer
    x = 733,451.65

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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.