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Finding the Fourth Proportional to 695,550, 959,868.72 and 405,154.02

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Solution

The fourth proportional to 695,550, 959,868.72 and 405,154.02 is: 559,118.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,550 : 959,868.72 = 405,154.02 : x
  2. Step 2: Convert to fraction form
    695,550/959,868.72 = 405,154.02/x
  3. Step 3: Cross multiply
    695,550x = 959,868.72 × 405,154.02
  4. Step 4: Simplify right side
    695,550x = 388,894,670,580.25
  5. Step 5: Solve for x
    x = 388,894,670,580.25/695,550
  6. Step 6: Final answer
    x = 559,118.21

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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.