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Finding the Fourth Proportional to 719,461.73, 992,831.13 and 397,164.89

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Solution

The fourth proportional to 719,461.73, 992,831.13 and 397,164.89 is: 548,073.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,461.73 : 992,831.13 = 397,164.89 : x
  2. Step 2: Convert to fraction form
    719,461.73/992,831.13 = 397,164.89/x
  3. Step 3: Cross multiply
    719,461.73x = 992,831.13 × 397,164.89
  4. Step 4: Simplify right side
    719,461.73x = 394,317,661,570.87
  5. Step 5: Solve for x
    x = 394,317,661,570.87/719,461.73
  6. Step 6: Final answer
    x = 548,073.16

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Double scale
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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.