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Finding the Fourth Proportional to 658,711.46, 909,022.42 and 356,905.46

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Solution

The fourth proportional to 658,711.46, 909,022.42 and 356,905.46 is: 492,529.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,711.46 : 909,022.42 = 356,905.46 : x
  2. Step 2: Convert to fraction form
    658,711.46/909,022.42 = 356,905.46/x
  3. Step 3: Cross multiply
    658,711.46x = 909,022.42 × 356,905.46
  4. Step 4: Simplify right side
    658,711.46x = 324,435,064,960.41
  5. Step 5: Solve for x
    x = 324,435,064,960.41/658,711.46
  6. Step 6: Final answer
    x = 492,529.86

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1.5x scale

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.