Home / 772,542.60-1,158,813.90-489,107.40

Finding the Fourth Proportional to 772,542.60, 1,158,813.90 and 489,107.40

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Solution

The fourth proportional to 772,542.60, 1,158,813.90 and 489,107.40 is: 733,661.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,542.60 : 1,158,813.90 = 489,107.40 : x
  2. Step 2: Convert to fraction form
    772,542.60/1,158,813.90 = 489,107.40/x
  3. Step 3: Cross multiply
    772,542.60x = 1,158,813.90 × 489,107.40
  4. Step 4: Simplify right side
    772,542.60x = 566,784,453,712.86
  5. Step 5: Solve for x
    x = 566,784,453,712.86/772,542.60
  6. Step 6: Final answer
    x = 733,661.10

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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.