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Finding the Fourth Proportional to 489,348.80, 734,023.20 and 453,919.40

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Solution

The fourth proportional to 489,348.80, 734,023.20 and 453,919.40 is: 680,879.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,348.80 : 734,023.20 = 453,919.40 : x
  2. Step 2: Convert to fraction form
    489,348.80/734,023.20 = 453,919.40/x
  3. Step 3: Cross multiply
    489,348.80x = 734,023.20 × 453,919.40
  4. Step 4: Simplify right side
    489,348.80x = 333,187,370,530.08
  5. Step 5: Solve for x
    x = 333,187,370,530.08/489,348.80
  6. Step 6: Final answer
    x = 680,879.10

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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.