Home / 457,579.68-631,246.36-287,907.36

Finding the Fourth Proportional to 457,579.68, 631,246.36 and 287,907.36

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Solution

The fourth proportional to 457,579.68, 631,246.36 and 287,907.36 is: 397,177.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,579.68 : 631,246.36 = 287,907.36 : x
  2. Step 2: Convert to fraction form
    457,579.68/631,246.36 = 287,907.36/x
  3. Step 3: Cross multiply
    457,579.68x = 631,246.36 × 287,907.36
  4. Step 4: Simplify right side
    457,579.68x = 181,740,473,017.21
  5. Step 5: Solve for x
    x = 181,740,473,017.21/457,579.68
  6. Step 6: Final answer
    x = 397,177.76

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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.