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Finding the Fourth Proportional to 405,703.75, 607,833.91 and 345,933.04

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Solution

The fourth proportional to 405,703.75, 607,833.91 and 345,933.04 is: 518,284.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,703.75 : 607,833.91 = 345,933.04 : x
  2. Step 2: Convert to fraction form
    405,703.75/607,833.91 = 345,933.04/x
  3. Step 3: Cross multiply
    405,703.75x = 607,833.91 × 345,933.04
  4. Step 4: Simplify right side
    405,703.75x = 210,269,832,301.39
  5. Step 5: Solve for x
    x = 210,269,832,301.39/405,703.75
  6. Step 6: Final answer
    x = 518,284.17

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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.