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Finding the Fourth Proportional to 557,587.47, 769,508.82 and 315,872.04

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Solution

The fourth proportional to 557,587.47, 769,508.82 and 315,872.04 is: 435,925.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,587.47 : 769,508.82 = 315,872.04 : x
  2. Step 2: Convert to fraction form
    557,587.47/769,508.82 = 315,872.04/x
  3. Step 3: Cross multiply
    557,587.47x = 769,508.82 × 315,872.04
  4. Step 4: Simplify right side
    557,587.47x = 243,066,320,771.39
  5. Step 5: Solve for x
    x = 243,066,320,771.39/557,587.47
  6. Step 6: Final answer
    x = 435,925.01

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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.