Home / 723,721.08-998,751.06-401,420.64

Finding the Fourth Proportional to 723,721.08, 998,751.06 and 401,420.64

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Solution

The fourth proportional to 723,721.08, 998,751.06 and 401,420.64 is: 553,969.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,721.08 : 998,751.06 = 401,420.64 : x
  2. Step 2: Convert to fraction form
    723,721.08/998,751.06 = 401,420.64/x
  3. Step 3: Cross multiply
    723,721.08x = 998,751.06 × 401,420.64
  4. Step 4: Simplify right side
    723,721.08x = 400,919,289,705.88
  5. Step 5: Solve for x
    x = 400,919,289,705.88/723,721.08
  6. Step 6: Final answer
    x = 553,969.34

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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.