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Finding the Fourth Proportional to 691,860.84, 954,731.52 and 385,969.20

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Solution

The fourth proportional to 691,860.84, 954,731.52 and 385,969.20 is: 532,617.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,860.84 : 954,731.52 = 385,969.20 : x
  2. Step 2: Convert to fraction form
    691,860.84/954,731.52 = 385,969.20/x
  3. Step 3: Cross multiply
    691,860.84x = 954,731.52 × 385,969.20
  4. Step 4: Simplify right side
    691,860.84x = 368,496,960,989.18
  5. Step 5: Solve for x
    x = 368,496,960,989.18/691,860.84
  6. Step 6: Final answer
    x = 532,617.17

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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.