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Finding the Fourth Proportional to 557,695.01, 769,556.65 and 315,925.81

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Solution

The fourth proportional to 557,695.01, 769,556.65 and 315,925.81 is: 435,942.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,695.01 : 769,556.65 = 315,925.81 : x
  2. Step 2: Convert to fraction form
    557,695.01/769,556.65 = 315,925.81/x
  3. Step 3: Cross multiply
    557,695.01x = 769,556.65 × 315,925.81
  4. Step 4: Simplify right side
    557,695.01x = 243,122,807,992.14
  5. Step 5: Solve for x
    x = 243,122,807,992.14/557,695.01
  6. Step 6: Final answer
    x = 435,942.23

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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.