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Finding the Fourth Proportional to 658,639.40, 986,576.70 and 362,805.80

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Solution

The fourth proportional to 658,639.40, 986,576.70 and 362,805.80 is: 543,447.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,639.40 : 986,576.70 = 362,805.80 : x
  2. Step 2: Convert to fraction form
    658,639.40/986,576.70 = 362,805.80/x
  3. Step 3: Cross multiply
    658,639.40x = 986,576.70 × 362,805.80
  4. Step 4: Simplify right side
    658,639.40x = 357,935,748,904.86
  5. Step 5: Solve for x
    x = 357,935,748,904.86/658,639.40
  6. Step 6: Final answer
    x = 543,447.22

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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.