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Finding the Fourth Proportional to 405,881.46, 559,658.04 and 303,579.08

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Solution

The fourth proportional to 405,881.46, 559,658.04 and 303,579.08 is: 418,596.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,881.46 : 559,658.04 = 303,579.08 : x
  2. Step 2: Convert to fraction form
    405,881.46/559,658.04 = 303,579.08/x
  3. Step 3: Cross multiply
    405,881.46x = 559,658.04 × 303,579.08
  4. Step 4: Simplify right side
    405,881.46x = 169,900,470,099.51
  5. Step 5: Solve for x
    x = 169,900,470,099.51/405,881.46
  6. Step 6: Final answer
    x = 418,596.28

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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.