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Finding the Fourth Proportional to 719,467.95, 992,868.94 and 397,180.69

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Solution

The fourth proportional to 719,467.95, 992,868.94 and 397,180.69 is: 548,111.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,467.95 : 992,868.94 = 397,180.69 : x
  2. Step 2: Convert to fraction form
    719,467.95/992,868.94 = 397,180.69/x
  3. Step 3: Cross multiply
    719,467.95x = 992,868.94 × 397,180.69
  4. Step 4: Simplify right side
    719,467.95x = 394,348,370,668.77
  5. Step 5: Solve for x
    x = 394,348,370,668.77/719,467.95
  6. Step 6: Final answer
    x = 548,111.10

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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.