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Finding the Fourth Proportional to 557,680.39, 769,603.56 and 303,031.58

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Solution

The fourth proportional to 557,680.39, 769,603.56 and 303,031.58 is: 418,186.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,680.39 : 769,603.56 = 303,031.58 : x
  2. Step 2: Convert to fraction form
    557,680.39/769,603.56 = 303,031.58/x
  3. Step 3: Cross multiply
    557,680.39x = 769,603.56 × 303,031.58
  4. Step 4: Simplify right side
    557,680.39x = 233,214,183,613.45
  5. Step 5: Solve for x
    x = 233,214,183,613.45/557,680.39
  6. Step 6: Final answer
    x = 418,186.09

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1.5x scale

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.