Home / 724,279.16-999,551.96-401,989.28

Finding the Fourth Proportional to 724,279.16, 999,551.96 and 401,989.28

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Solution

The fourth proportional to 724,279.16, 999,551.96 and 401,989.28 is: 554,771.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,279.16 : 999,551.96 = 401,989.28 : x
  2. Step 2: Convert to fraction form
    724,279.16/999,551.96 = 401,989.28/x
  3. Step 3: Cross multiply
    724,279.16x = 999,551.96 × 401,989.28
  4. Step 4: Simplify right side
    724,279.16x = 401,809,172,722.99
  5. Step 5: Solve for x
    x = 401,809,172,722.99/724,279.16
  6. Step 6: Final answer
    x = 554,771.14

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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.