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Finding the Fourth Proportional to 719,483.69, 992,895.54 and 397,193.96

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Solution

The fourth proportional to 719,483.69, 992,895.54 and 397,193.96 is: 548,132.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,483.69 : 992,895.54 = 397,193.96 : x
  2. Step 2: Convert to fraction form
    719,483.69/992,895.54 = 397,193.96/x
  3. Step 3: Cross multiply
    719,483.69x = 992,895.54 × 397,193.96
  4. Step 4: Simplify right side
    719,483.69x = 394,372,111,398.94
  5. Step 5: Solve for x
    x = 394,372,111,398.94/719,483.69
  6. Step 6: Final answer
    x = 548,132.11

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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.