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Finding the Fourth Proportional to 665,532.65, 918,483.12 and 379,052.66

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Solution

The fourth proportional to 665,532.65, 918,483.12 and 379,052.66 is: 523,120.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,532.65 : 918,483.12 = 379,052.66 : x
  2. Step 2: Convert to fraction form
    665,532.65/918,483.12 = 379,052.66/x
  3. Step 3: Cross multiply
    665,532.65x = 918,483.12 × 379,052.66
  4. Step 4: Simplify right side
    665,532.65x = 348,153,473,163.39
  5. Step 5: Solve for x
    x = 348,153,473,163.39/665,532.65
  6. Step 6: Final answer
    x = 523,120.05

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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.