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Finding the Fourth Proportional to 557,699.03, 769,622.61 and 316,027.79

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Solution

The fourth proportional to 557,699.03, 769,622.61 and 316,027.79 is: 436,117.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,699.03 : 769,622.61 = 316,027.79 : x
  2. Step 2: Convert to fraction form
    557,699.03/769,622.61 = 316,027.79/x
  3. Step 3: Cross multiply
    557,699.03x = 769,622.61 × 316,027.79
  4. Step 4: Simplify right side
    557,699.03x = 243,222,128,724.22
  5. Step 5: Solve for x
    x = 243,222,128,724.22/557,699.03
  6. Step 6: Final answer
    x = 436,117.18

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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.