Home / 457,581.68-631,249.12-287,909.36

Finding the Fourth Proportional to 457,581.68, 631,249.12 and 287,909.36

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Solution

The fourth proportional to 457,581.68, 631,249.12 and 287,909.36 is: 397,180.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,581.68 : 631,249.12 = 287,909.36 : x
  2. Step 2: Convert to fraction form
    457,581.68/631,249.12 = 287,909.36/x
  3. Step 3: Cross multiply
    457,581.68x = 631,249.12 × 287,909.36
  4. Step 4: Simplify right side
    457,581.68x = 181,742,530,139.76
  5. Step 5: Solve for x
    x = 181,742,530,139.76/457,581.68
  6. Step 6: Final answer
    x = 397,180.52

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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.