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Finding the Fourth Proportional to 724,039.80, 999,174.92 and 401,801.72

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Solution

The fourth proportional to 724,039.80, 999,174.92 and 401,801.72 is: 554,486.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,039.80 : 999,174.92 = 401,801.72 : x
  2. Step 2: Convert to fraction form
    724,039.80/999,174.92 = 401,801.72/x
  3. Step 3: Cross multiply
    724,039.80x = 999,174.92 × 401,801.72
  4. Step 4: Simplify right side
    724,039.80x = 401,470,201,436.86
  5. Step 5: Solve for x
    x = 401,470,201,436.86/724,039.80
  6. Step 6: Final answer
    x = 554,486.37

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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.