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Finding the Fourth Proportional to 1,151,959, 1,728,709.80 and 478,040.98

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Solution

The fourth proportional to 1,151,959, 1,728,709.80 and 478,040.98 is: 717,381.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,151,959 : 1,728,709.80 = 478,040.98 : x
  2. Step 2: Convert to fraction form
    1,151,959/1,728,709.80 = 478,040.98/x
  3. Step 3: Cross multiply
    1,151,959x = 1,728,709.80 × 478,040.98
  4. Step 4: Simplify right side
    1,151,959x = 826,394,126,927.60
  5. Step 5: Solve for x
    x = 826,394,126,927.60/1,151,959
  6. Step 6: Final answer
    x = 717,381.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.