Home / 457,058.16-630,665.28-287,172

Finding the Fourth Proportional to 457,058.16, 630,665.28 and 287,172

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Solution

The fourth proportional to 457,058.16, 630,665.28 and 287,172 is: 396,250.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,058.16 : 630,665.28 = 287,172 : x
  2. Step 2: Convert to fraction form
    457,058.16/630,665.28 = 287,172/x
  3. Step 3: Cross multiply
    457,058.16x = 630,665.28 × 287,172
  4. Step 4: Simplify right side
    457,058.16x = 181,109,409,788.16
  5. Step 5: Solve for x
    x = 181,109,409,788.16/457,058.16
  6. Step 6: Final answer
    x = 396,250.25

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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.