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Finding the Fourth Proportional to 563,609.97, 777,835.58 and 321,928.65

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Solution

The fourth proportional to 563,609.97, 777,835.58 and 321,928.65 is: 444,292.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,609.97 : 777,835.58 = 321,928.65 : x
  2. Step 2: Convert to fraction form
    563,609.97/777,835.58 = 321,928.65/x
  3. Step 3: Cross multiply
    563,609.97x = 777,835.58 × 321,928.65
  4. Step 4: Simplify right side
    563,609.97x = 250,407,556,581.72
  5. Step 5: Solve for x
    x = 250,407,556,581.72/563,609.97
  6. Step 6: Final answer
    x = 444,292.28

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Double scale
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1.5x scale

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.