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Finding the Fourth Proportional to 723,578.54, 998,599.72 and 401,392.44

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Solution

The fourth proportional to 723,578.54, 998,599.72 and 401,392.44 is: 553,955.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,578.54 : 998,599.72 = 401,392.44 : x
  2. Step 2: Convert to fraction form
    723,578.54/998,599.72 = 401,392.44/x
  3. Step 3: Cross multiply
    723,578.54x = 998,599.72 × 401,392.44
  4. Step 4: Simplify right side
    723,578.54x = 400,830,378,194.12
  5. Step 5: Solve for x
    x = 400,830,378,194.12/723,578.54
  6. Step 6: Final answer
    x = 553,955.59

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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.