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Finding the Fourth Proportional to 587,754.98, 811,190.54 and 358,445.30

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Solution

The fourth proportional to 587,754.98, 811,190.54 and 358,445.30 is: 494,708.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,754.98 : 811,190.54 = 358,445.30 : x
  2. Step 2: Convert to fraction form
    587,754.98/811,190.54 = 358,445.30/x
  3. Step 3: Cross multiply
    587,754.98x = 811,190.54 × 358,445.30
  4. Step 4: Simplify right side
    587,754.98x = 290,767,436,467.46
  5. Step 5: Solve for x
    x = 290,767,436,467.46/587,754.98
  6. Step 6: Final answer
    x = 494,708.59

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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.