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Finding the Fourth Proportional to 723,801.41, 998,878.70 and 401,511.72

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Solution

The fourth proportional to 723,801.41, 998,878.70 and 401,511.72 is: 554,104.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,801.41 : 998,878.70 = 401,511.72 : x
  2. Step 2: Convert to fraction form
    723,801.41/998,878.70 = 401,511.72/x
  3. Step 3: Cross multiply
    723,801.41x = 998,878.70 × 401,511.72
  4. Step 4: Simplify right side
    723,801.41x = 401,061,504,908.36
  5. Step 5: Solve for x
    x = 401,061,504,908.36/723,801.41
  6. Step 6: Final answer
    x = 554,104.34

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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.