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Finding the Fourth Proportional to 691,859.34, 954,729.45 and 385,967.70

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Solution

The fourth proportional to 691,859.34, 954,729.45 and 385,967.70 is: 532,615.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,859.34 : 954,729.45 = 385,967.70 : x
  2. Step 2: Convert to fraction form
    691,859.34/954,729.45 = 385,967.70/x
  3. Step 3: Cross multiply
    691,859.34x = 954,729.45 × 385,967.70
  4. Step 4: Simplify right side
    691,859.34x = 368,494,729,938.77
  5. Step 5: Solve for x
    x = 368,494,729,938.77/691,859.34
  6. Step 6: Final answer
    x = 532,615.10

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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.