Home / 819,367.70-1,229,051.58-258,445.94

Finding the Fourth Proportional to 819,367.70, 1,229,051.58 and 258,445.94

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Solution

The fourth proportional to 819,367.70, 1,229,051.58 and 258,445.94 is: 387,668.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,367.70 : 1,229,051.58 = 258,445.94 : x
  2. Step 2: Convert to fraction form
    819,367.70/1,229,051.58 = 258,445.94/x
  3. Step 3: Cross multiply
    819,367.70x = 1,229,051.58 × 258,445.94
  4. Step 4: Simplify right side
    819,367.70x = 317,643,390,901.59
  5. Step 5: Solve for x
    x = 317,643,390,901.59/819,367.70
  6. Step 6: Final answer
    x = 387,668.92

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Double scale
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Similar ratio
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1.5x scale

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.