Home / 521,814.23-720,449.06-400,738.26

Finding the Fourth Proportional to 521,814.23, 720,449.06 and 400,738.26

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Solution

The fourth proportional to 521,814.23, 720,449.06 and 400,738.26 is: 553,284.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,814.23 : 720,449.06 = 400,738.26 : x
  2. Step 2: Convert to fraction form
    521,814.23/720,449.06 = 400,738.26/x
  3. Step 3: Cross multiply
    521,814.23x = 720,449.06 × 400,738.26
  4. Step 4: Simplify right side
    521,814.23x = 288,711,500,719.34
  5. Step 5: Solve for x
    x = 288,711,500,719.34/521,814.23
  6. Step 6: Final answer
    x = 553,284.07

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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.