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Finding the Fourth Proportional to 719,477.32, 992,872.60 and 397,180.50

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Solution

The fourth proportional to 719,477.32, 992,872.60 and 397,180.50 is: 548,105.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,477.32 : 992,872.60 = 397,180.50 : x
  2. Step 2: Convert to fraction form
    719,477.32/992,872.60 = 397,180.50/x
  3. Step 3: Cross multiply
    719,477.32x = 992,872.60 × 397,180.50
  4. Step 4: Simplify right side
    719,477.32x = 394,349,633,222.22
  5. Step 5: Solve for x
    x = 394,349,633,222.22/719,477.32
  6. Step 6: Final answer
    x = 548,105.72

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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.