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Finding the Fourth Proportional to 580,638.40, 869,791.20 and 403,345.60

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Solution

The fourth proportional to 580,638.40, 869,791.20 and 403,345.60 is: 604,208.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,638.40 : 869,791.20 = 403,345.60 : x
  2. Step 2: Convert to fraction form
    580,638.40/869,791.20 = 403,345.60/x
  3. Step 3: Cross multiply
    580,638.40x = 869,791.20 × 403,345.60
  4. Step 4: Simplify right side
    580,638.40x = 350,826,453,438.72
  5. Step 5: Solve for x
    x = 350,826,453,438.72/580,638.40
  6. Step 6: Final answer
    x = 604,208.15

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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.