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Finding the Fourth Proportional to 425,808.42, 638,186.66 and 365,412.36

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Solution

The fourth proportional to 425,808.42, 638,186.66 and 365,412.36 is: 547,667.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,808.42 : 638,186.66 = 365,412.36 : x
  2. Step 2: Convert to fraction form
    425,808.42/638,186.66 = 365,412.36/x
  3. Step 3: Cross multiply
    425,808.42x = 638,186.66 × 365,412.36
  4. Step 4: Simplify right side
    425,808.42x = 233,201,293,551.12
  5. Step 5: Solve for x
    x = 233,201,293,551.12/425,808.42
  6. Step 6: Final answer
    x = 547,667.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.