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Finding the Fourth Proportional to 693,661, 957,252.18 and 375,709

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Solution

The fourth proportional to 693,661, 957,252.18 and 375,709 is: 518,478.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,661 : 957,252.18 = 375,709 : x
  2. Step 2: Convert to fraction form
    693,661/957,252.18 = 375,709/x
  3. Step 3: Cross multiply
    693,661x = 957,252.18 × 375,709
  4. Step 4: Simplify right side
    693,661x = 359,648,259,295.62
  5. Step 5: Solve for x
    x = 359,648,259,295.62/693,661
  6. Step 6: Final answer
    x = 518,478.42

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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.