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Finding the Fourth Proportional to 693,388.34, 956,871.19 and 387,465.48

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Solution

The fourth proportional to 693,388.34, 956,871.19 and 387,465.48 is: 534,699.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,388.34 : 956,871.19 = 387,465.48 : x
  2. Step 2: Convert to fraction form
    693,388.34/956,871.19 = 387,465.48/x
  3. Step 3: Cross multiply
    693,388.34x = 956,871.19 × 387,465.48
  4. Step 4: Simplify right side
    693,388.34x = 370,754,554,931.52
  5. Step 5: Solve for x
    x = 370,754,554,931.52/693,388.34
  6. Step 6: Final answer
    x = 534,699.73

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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.