Home / 842,465.70-1,263,698.55-422,561.70

Finding the Fourth Proportional to 842,465.70, 1,263,698.55 and 422,561.70

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Solution

The fourth proportional to 842,465.70, 1,263,698.55 and 422,561.70 is: 633,842.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    842,465.70 : 1,263,698.55 = 422,561.70 : x
  2. Step 2: Convert to fraction form
    842,465.70/1,263,698.55 = 422,561.70/x
  3. Step 3: Cross multiply
    842,465.70x = 1,263,698.55 × 422,561.70
  4. Step 4: Simplify right side
    842,465.70x = 533,990,607,575.54
  5. Step 5: Solve for x
    x = 533,990,607,575.54/842,465.70
  6. Step 6: Final answer
    x = 633,842.55

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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.