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Finding the Fourth Proportional to 580,020.80, 872,104.80 and 488,782.40

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Solution

The fourth proportional to 580,020.80, 872,104.80 and 488,782.40 is: 734,921.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,020.80 : 872,104.80 = 488,782.40 : x
  2. Step 2: Convert to fraction form
    580,020.80/872,104.80 = 488,782.40/x
  3. Step 3: Cross multiply
    580,020.80x = 872,104.80 × 488,782.40
  4. Step 4: Simplify right side
    580,020.80x = 426,269,477,195.52
  5. Step 5: Solve for x
    x = 426,269,477,195.52/580,020.80
  6. Step 6: Final answer
    x = 734,921.02

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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.