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Finding the Fourth Proportional to 719,511.03, 992,926.48 and 397,221.65

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Solution

The fourth proportional to 719,511.03, 992,926.48 and 397,221.65 is: 548,166.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,511.03 : 992,926.48 = 397,221.65 : x
  2. Step 2: Convert to fraction form
    719,511.03/992,926.48 = 397,221.65/x
  3. Step 3: Cross multiply
    719,511.03x = 992,926.48 × 397,221.65
  4. Step 4: Simplify right side
    719,511.03x = 394,411,888,756.61
  5. Step 5: Solve for x
    x = 394,411,888,756.61/719,511.03
  6. Step 6: Final answer
    x = 548,166.56

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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.