Home / 1,515,421.72-2,091,553.14-903,613.96

Finding the Fourth Proportional to 1,515,421.72, 2,091,553.14 and 903,613.96

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Solution

The fourth proportional to 1,515,421.72, 2,091,553.14 and 903,613.96 is: 1,247,148.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515,421.72 : 2,091,553.14 = 903,613.96 : x
  2. Step 2: Convert to fraction form
    1,515,421.72/2,091,553.14 = 903,613.96/x
  3. Step 3: Cross multiply
    1,515,421.72x = 2,091,553.14 × 903,613.96
  4. Step 4: Simplify right side
    1,515,421.72x = 1,889,956,615,385.83
  5. Step 5: Solve for x
    x = 1,889,956,615,385.83/1,515,421.72
  6. Step 6: Final answer
    x = 1,247,148.96

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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.