Home / 723,868.40-998,939.64-401,578.56

Finding the Fourth Proportional to 723,868.40, 998,939.64 and 401,578.56

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Solution

The fourth proportional to 723,868.40, 998,939.64 and 401,578.56 is: 554,179.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,868.40 : 998,939.64 = 401,578.56 : x
  2. Step 2: Convert to fraction form
    723,868.40/998,939.64 = 401,578.56/x
  3. Step 3: Cross multiply
    723,868.40x = 998,939.64 × 401,578.56
  4. Step 4: Simplify right side
    723,868.40x = 401,152,742,158.12
  5. Step 5: Solve for x
    x = 401,152,742,158.12/723,868.40
  6. Step 6: Final answer
    x = 554,179.11

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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.