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Finding the Fourth Proportional to 691,860.34, 954,730.83 and 385,968.70

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Solution

The fourth proportional to 691,860.34, 954,730.83 and 385,968.70 is: 532,616.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,860.34 : 954,730.83 = 385,968.70 : x
  2. Step 2: Convert to fraction form
    691,860.34/954,730.83 = 385,968.70/x
  3. Step 3: Cross multiply
    691,860.34x = 954,730.83 × 385,968.70
  4. Step 4: Simplify right side
    691,860.34x = 368,496,217,305.02
  5. Step 5: Solve for x
    x = 368,496,217,305.02/691,860.34
  6. Step 6: Final answer
    x = 532,616.48

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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.