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Finding the Fourth Proportional to 695,720.72, 960,118.44 and 405,313.04

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Solution

The fourth proportional to 695,720.72, 960,118.44 and 405,313.04 is: 559,345.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,720.72 : 960,118.44 = 405,313.04 : x
  2. Step 2: Convert to fraction form
    695,720.72/960,118.44 = 405,313.04/x
  3. Step 3: Cross multiply
    695,720.72x = 960,118.44 × 405,313.04
  4. Step 4: Simplify right side
    695,720.72x = 389,148,523,676.46
  5. Step 5: Solve for x
    x = 389,148,523,676.46/695,720.72
  6. Step 6: Final answer
    x = 559,345.89

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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.