Home / 899,393.79-1,241,179.74-491,512.89

Finding the Fourth Proportional to 899,393.79, 1,241,179.74 and 491,512.89

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Solution

The fourth proportional to 899,393.79, 1,241,179.74 and 491,512.89 is: 678,296.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    899,393.79 : 1,241,179.74 = 491,512.89 : x
  2. Step 2: Convert to fraction form
    899,393.79/1,241,179.74 = 491,512.89/x
  3. Step 3: Cross multiply
    899,393.79x = 1,241,179.74 × 491,512.89
  4. Step 4: Simplify right side
    899,393.79x = 610,055,841,016.85
  5. Step 5: Solve for x
    x = 610,055,841,016.85/899,393.79
  6. Step 6: Final answer
    x = 678,296.70

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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.