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Finding the Fourth Proportional to 719,305.44, 992,648.72 and 397,008.48

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Solution

The fourth proportional to 719,305.44, 992,648.72 and 397,008.48 is: 547,875.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,305.44 : 992,648.72 = 397,008.48 : x
  2. Step 2: Convert to fraction form
    719,305.44/992,648.72 = 397,008.48/x
  3. Step 3: Cross multiply
    719,305.44x = 992,648.72 × 397,008.48
  4. Step 4: Simplify right side
    719,305.44x = 394,089,959,501.15
  5. Step 5: Solve for x
    x = 394,089,959,501.15/719,305.44
  6. Step 6: Final answer
    x = 547,875.68

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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.