Home / 1,228,699.72-1,695,613.47-684,870

Finding the Fourth Proportional to 1,228,699.72, 1,695,613.47 and 684,870

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Solution

The fourth proportional to 1,228,699.72, 1,695,613.47 and 684,870 is: 945,124.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,228,699.72 : 1,695,613.47 = 684,870 : x
  2. Step 2: Convert to fraction form
    1,228,699.72/1,695,613.47 = 684,870/x
  3. Step 3: Cross multiply
    1,228,699.72x = 1,695,613.47 × 684,870
  4. Step 4: Simplify right side
    1,228,699.72x = 1,161,274,797,198.90
  5. Step 5: Solve for x
    x = 1,161,274,797,198.90/1,228,699.72
  6. Step 6: Final answer
    x = 945,124.98

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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.