Home / 691,155.69-953,755.07-385,221.93

Finding the Fourth Proportional to 691,155.69, 953,755.07 and 385,221.93

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Solution

The fourth proportional to 691,155.69, 953,755.07 and 385,221.93 is: 531,584.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,155.69 : 953,755.07 = 385,221.93 : x
  2. Step 2: Convert to fraction form
    691,155.69/953,755.07 = 385,221.93/x
  3. Step 3: Cross multiply
    691,155.69x = 953,755.07 × 385,221.93
  4. Step 4: Simplify right side
    691,155.69x = 367,407,366,886.58
  5. Step 5: Solve for x
    x = 367,407,366,886.58/691,155.69
  6. Step 6: Final answer
    x = 531,584.09

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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.