Home / 1,613,286.86-2,421,426.56-815,128.92

Finding the Fourth Proportional to 1,613,286.86, 2,421,426.56 and 815,128.92

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Solution

The fourth proportional to 1,613,286.86, 2,421,426.56 and 815,128.92 is: 1,223,449.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,613,286.86 : 2,421,426.56 = 815,128.92 : x
  2. Step 2: Convert to fraction form
    1,613,286.86/2,421,426.56 = 815,128.92/x
  3. Step 3: Cross multiply
    1,613,286.86x = 2,421,426.56 × 815,128.92
  4. Step 4: Simplify right side
    1,613,286.86x = 1,973,774,812,636.47
  5. Step 5: Solve for x
    x = 1,973,774,812,636.47/1,613,286.86
  6. Step 6: Final answer
    x = 1,223,449.39

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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.