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Finding the Fourth Proportional to 400,583.60, 603,687.25 and 360,642.50

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Solution

The fourth proportional to 400,583.60, 603,687.25 and 360,642.50 is: 543,495.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,583.60 : 603,687.25 = 360,642.50 : x
  2. Step 2: Convert to fraction form
    400,583.60/603,687.25 = 360,642.50/x
  3. Step 3: Cross multiply
    400,583.60x = 603,687.25 × 360,642.50
  4. Step 4: Simplify right side
    400,583.60x = 217,715,279,058.13
  5. Step 5: Solve for x
    x = 217,715,279,058.13/400,583.60
  6. Step 6: Final answer
    x = 543,495.24

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.