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Finding the Fourth Proportional to 647,394.78, 893,408.62 and 375,624.54

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Solution

The fourth proportional to 647,394.78, 893,408.62 and 375,624.54 is: 518,364.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,394.78 : 893,408.62 = 375,624.54 : x
  2. Step 2: Convert to fraction form
    647,394.78/893,408.62 = 375,624.54/x
  3. Step 3: Cross multiply
    647,394.78x = 893,408.62 × 375,624.54
  4. Step 4: Simplify right side
    647,394.78x = 335,586,201,919.54
  5. Step 5: Solve for x
    x = 335,586,201,919.54/647,394.78
  6. Step 6: Final answer
    x = 518,364.08

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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.