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Finding the Fourth Proportional to 2,859,978.15, 4,289,965.85 and 730,061.58

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Solution

The fourth proportional to 2,859,978.15, 4,289,965.85 and 730,061.58 is: 1,095,092.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,859,978.15 : 4,289,965.85 = 730,061.58 : x
  2. Step 2: Convert to fraction form
    2,859,978.15/4,289,965.85 = 730,061.58/x
  3. Step 3: Cross multiply
    2,859,978.15x = 4,289,965.85 × 730,061.58
  4. Step 4: Simplify right side
    2,859,978.15x = 3,131,939,235,872.13
  5. Step 5: Solve for x
    x = 3,131,939,235,872.13/2,859,978.15
  6. Step 6: Final answer
    x = 1,095,092.02

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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.