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Finding the Fourth Proportional to 438,479.70, 605,153.04 and 364,761.90

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Solution

The fourth proportional to 438,479.70, 605,153.04 and 364,761.90 is: 503,413.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,479.70 : 605,153.04 = 364,761.90 : x
  2. Step 2: Convert to fraction form
    438,479.70/605,153.04 = 364,761.90/x
  3. Step 3: Cross multiply
    438,479.70x = 605,153.04 × 364,761.90
  4. Step 4: Simplify right side
    438,479.70x = 220,736,772,661.18
  5. Step 5: Solve for x
    x = 220,736,772,661.18/438,479.70
  6. Step 6: Final answer
    x = 503,413.89

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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.