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Finding the Fourth Proportional to 487,638.52, 673,076.40 and 283,728.82

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Solution

The fourth proportional to 487,638.52, 673,076.40 and 283,728.82 is: 391,624.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,638.52 : 673,076.40 = 283,728.82 : x
  2. Step 2: Convert to fraction form
    487,638.52/673,076.40 = 283,728.82/x
  3. Step 3: Cross multiply
    487,638.52x = 673,076.40 × 283,728.82
  4. Step 4: Simplify right side
    487,638.52x = 190,971,172,741.85
  5. Step 5: Solve for x
    x = 190,971,172,741.85/487,638.52
  6. Step 6: Final answer
    x = 391,624.46

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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.