Home / 520,538.31-718,329.38-287,973.83

Finding the Fourth Proportional to 520,538.31, 718,329.38 and 287,973.83

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Solution

The fourth proportional to 520,538.31, 718,329.38 and 287,973.83 is: 397,396.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,538.31 : 718,329.38 = 287,973.83 : x
  2. Step 2: Convert to fraction form
    520,538.31/718,329.38 = 287,973.83/x
  3. Step 3: Cross multiply
    520,538.31x = 718,329.38 × 287,973.83
  4. Step 4: Simplify right side
    520,538.31x = 206,860,063,116.08
  5. Step 5: Solve for x
    x = 206,860,063,116.08/520,538.31
  6. Step 6: Final answer
    x = 397,396.42

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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.