Home / 1,120,979.32-1,681,421.92-521,734.36

Finding the Fourth Proportional to 1,120,979.32, 1,681,421.92 and 521,734.36

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Solution

The fourth proportional to 1,120,979.32, 1,681,421.92 and 521,734.36 is: 782,579.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120,979.32 : 1,681,421.92 = 521,734.36 : x
  2. Step 2: Convert to fraction form
    1,120,979.32/1,681,421.92 = 521,734.36/x
  3. Step 3: Cross multiply
    1,120,979.32x = 1,681,421.92 × 521,734.36
  4. Step 4: Simplify right side
    1,120,979.32x = 877,255,589,321.17
  5. Step 5: Solve for x
    x = 877,255,589,321.17/1,120,979.32
  6. Step 6: Final answer
    x = 782,579.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.