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Finding the Fourth Proportional to 658,634.40, 986,569.20 and 362,800.80

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Solution

The fourth proportional to 658,634.40, 986,569.20 and 362,800.80 is: 543,439.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,634.40 : 986,569.20 = 362,800.80 : x
  2. Step 2: Convert to fraction form
    658,634.40/986,569.20 = 362,800.80/x
  3. Step 3: Cross multiply
    658,634.40x = 986,569.20 × 362,800.80
  4. Step 4: Simplify right side
    658,634.40x = 357,928,095,015.36
  5. Step 5: Solve for x
    x = 357,928,095,015.36/658,634.40
  6. Step 6: Final answer
    x = 543,439.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.