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Finding the Fourth Proportional to 889,497.12, 1,334,375.68 and 258,328.92

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Solution

The fourth proportional to 889,497.12, 1,334,375.68 and 258,328.92 is: 387,531.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    889,497.12 : 1,334,375.68 = 258,328.92 : x
  2. Step 2: Convert to fraction form
    889,497.12/1,334,375.68 = 258,328.92/x
  3. Step 3: Cross multiply
    889,497.12x = 1,334,375.68 × 258,328.92
  4. Step 4: Simplify right side
    889,497.12x = 344,707,828,288.67
  5. Step 5: Solve for x
    x = 344,707,828,288.67/889,497.12
  6. Step 6: Final answer
    x = 387,531.13

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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.