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Finding the Fourth Proportional to 658,729.71, 909,047.61 and 356,923.71

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Solution

The fourth proportional to 658,729.71, 909,047.61 and 356,923.71 is: 492,555.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,729.71 : 909,047.61 = 356,923.71 : x
  2. Step 2: Convert to fraction form
    658,729.71/909,047.61 = 356,923.71/x
  3. Step 3: Cross multiply
    658,729.71x = 909,047.61 × 356,923.71
  4. Step 4: Simplify right side
    658,729.71x = 324,460,645,527.83
  5. Step 5: Solve for x
    x = 324,460,645,527.83/658,729.71
  6. Step 6: Final answer
    x = 492,555.05

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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.