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Finding the Fourth Proportional to 458,583.80, 688,531.80 and 326,051.60

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Solution

The fourth proportional to 458,583.80, 688,531.80 and 326,051.60 is: 489,543.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,583.80 : 688,531.80 = 326,051.60 : x
  2. Step 2: Convert to fraction form
    458,583.80/688,531.80 = 326,051.60/x
  3. Step 3: Cross multiply
    458,583.80x = 688,531.80 × 326,051.60
  4. Step 4: Simplify right side
    458,583.80x = 224,496,895,040.88
  5. Step 5: Solve for x
    x = 224,496,895,040.88/458,583.80
  6. Step 6: Final answer
    x = 489,543.88

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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.