Home / 1,107,637.86-1,528,824.62-721,415.68

Finding the Fourth Proportional to 1,107,637.86, 1,528,824.62 and 721,415.68

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Solution

The fourth proportional to 1,107,637.86, 1,528,824.62 and 721,415.68 is: 995,738.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,107,637.86 : 1,528,824.62 = 721,415.68 : x
  2. Step 2: Convert to fraction form
    1,107,637.86/1,528,824.62 = 721,415.68/x
  3. Step 3: Cross multiply
    1,107,637.86x = 1,528,824.62 × 721,415.68
  4. Step 4: Simplify right side
    1,107,637.86x = 1,102,918,052,838.04
  5. Step 5: Solve for x
    x = 1,102,918,052,838.04/1,107,637.86
  6. Step 6: Final answer
    x = 995,738.86

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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.