Home / 811,392.69-1,119,370.08-488,919.54

Finding the Fourth Proportional to 811,392.69, 1,119,370.08 and 488,919.54

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Solution

The fourth proportional to 811,392.69, 1,119,370.08 and 488,919.54 is: 674,496.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,392.69 : 1,119,370.08 = 488,919.54 : x
  2. Step 2: Convert to fraction form
    811,392.69/1,119,370.08 = 488,919.54/x
  3. Step 3: Cross multiply
    811,392.69x = 1,119,370.08 × 488,919.54
  4. Step 4: Simplify right side
    811,392.69x = 547,281,910,634.45
  5. Step 5: Solve for x
    x = 547,281,910,634.45/811,392.69
  6. Step 6: Final answer
    x = 674,496.97

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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.