Home / 1,125,502.76-1,687,219.59-405,668.32

Finding the Fourth Proportional to 1,125,502.76, 1,687,219.59 and 405,668.32

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Solution

The fourth proportional to 1,125,502.76, 1,687,219.59 and 405,668.32 is: 608,129.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,125,502.76 : 1,687,219.59 = 405,668.32 : x
  2. Step 2: Convert to fraction form
    1,125,502.76/1,687,219.59 = 405,668.32/x
  3. Step 3: Cross multiply
    1,125,502.76x = 1,687,219.59 × 405,668.32
  4. Step 4: Simplify right side
    1,125,502.76x = 684,451,536,546.39
  5. Step 5: Solve for x
    x = 684,451,536,546.39/1,125,502.76
  6. Step 6: Final answer
    x = 608,129.59

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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.