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Finding the Fourth Proportional to 3,739,607.79, 5,160,658.53 and 2,020,728.25

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Solution

The fourth proportional to 3,739,607.79, 5,160,658.53 and 2,020,728.25 is: 2,788,604.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,739,607.79 : 5,160,658.53 = 2,020,728.25 : x
  2. Step 2: Convert to fraction form
    3,739,607.79/5,160,658.53 = 2,020,728.25/x
  3. Step 3: Cross multiply
    3,739,607.79x = 5,160,658.53 × 2,020,728.25
  4. Step 4: Simplify right side
    3,739,607.79x = 10,428,288,480,174.47
  5. Step 5: Solve for x
    x = 10,428,288,480,174.47/3,739,607.79
  6. Step 6: Final answer
    x = 2,788,604.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.