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Finding the Fourth Proportional to 659,915.52, 910,670.88 and 401,698.56

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Solution

The fourth proportional to 659,915.52, 910,670.88 and 401,698.56 is: 554,336.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,915.52 : 910,670.88 = 401,698.56 : x
  2. Step 2: Convert to fraction form
    659,915.52/910,670.88 = 401,698.56/x
  3. Step 3: Cross multiply
    659,915.52x = 910,670.88 × 401,698.56
  4. Step 4: Simplify right side
    659,915.52x = 365,815,181,129.93
  5. Step 5: Solve for x
    x = 365,815,181,129.93/659,915.52
  6. Step 6: Final answer
    x = 554,336.38

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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.