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Finding the Fourth Proportional to 719,497.89, 992,881.08 and 397,201.08

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Solution

The fourth proportional to 719,497.89, 992,881.08 and 397,201.08 is: 548,123.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,497.89 : 992,881.08 = 397,201.08 : x
  2. Step 2: Convert to fraction form
    719,497.89/992,881.08 = 397,201.08/x
  3. Step 3: Cross multiply
    719,497.89x = 992,881.08 × 397,201.08
  4. Step 4: Simplify right side
    719,497.89x = 394,373,437,287.57
  5. Step 5: Solve for x
    x = 394,373,437,287.57/719,497.89
  6. Step 6: Final answer
    x = 548,123.13

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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.