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Finding the Fourth Proportional to 693,388, 956,875.44 and 375,436

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Solution

The fourth proportional to 693,388, 956,875.44 and 375,436 is: 518,101.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,388 : 956,875.44 = 375,436 : x
  2. Step 2: Convert to fraction form
    693,388/956,875.44 = 375,436/x
  3. Step 3: Cross multiply
    693,388x = 956,875.44 × 375,436
  4. Step 4: Simplify right side
    693,388x = 359,245,487,691.84
  5. Step 5: Solve for x
    x = 359,245,487,691.84/693,388
  6. Step 6: Final answer
    x = 518,101.68

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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.