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Finding the Fourth Proportional to 439,573.44, 658,875.76 and 287,587.87

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Solution

The fourth proportional to 439,573.44, 658,875.76 and 287,587.87 is: 431,064.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,573.44 : 658,875.76 = 287,587.87 : x
  2. Step 2: Convert to fraction form
    439,573.44/658,875.76 = 287,587.87/x
  3. Step 3: Cross multiply
    439,573.44x = 658,875.76 × 287,587.87
  4. Step 4: Simplify right side
    439,573.44x = 189,484,676,413.03
  5. Step 5: Solve for x
    x = 189,484,676,413.03/439,573.44
  6. Step 6: Final answer
    x = 431,064.89

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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.