Home / 1,224,129.76-1,689,341.58-680,288.47

Finding the Fourth Proportional to 1,224,129.76, 1,689,341.58 and 680,288.47

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Solution

The fourth proportional to 1,224,129.76, 1,689,341.58 and 680,288.47 is: 938,821.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,224,129.76 : 1,689,341.58 = 680,288.47 : x
  2. Step 2: Convert to fraction form
    1,224,129.76/1,689,341.58 = 680,288.47/x
  3. Step 3: Cross multiply
    1,224,129.76x = 1,689,341.58 × 680,288.47
  4. Step 4: Simplify right side
    1,224,129.76x = 1,149,239,598,765.58
  5. Step 5: Solve for x
    x = 1,149,239,598,765.58/1,224,129.76
  6. Step 6: Final answer
    x = 938,821.71

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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.