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Finding the Fourth Proportional to 719,482.69, 992,894.16 and 397,192.96

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Solution

The fourth proportional to 719,482.69, 992,894.16 and 397,192.96 is: 548,130.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,482.69 : 992,894.16 = 397,192.96 : x
  2. Step 2: Convert to fraction form
    719,482.69/992,894.16 = 397,192.96/x
  3. Step 3: Cross multiply
    719,482.69x = 992,894.16 × 397,192.96
  4. Step 4: Simplify right side
    719,482.69x = 394,370,570,377.11
  5. Step 5: Solve for x
    x = 394,370,570,377.11/719,482.69
  6. Step 6: Final answer
    x = 548,130.73

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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.