Home / 899,126.55-1,240,795.53-491,235.17

Finding the Fourth Proportional to 899,126.55, 1,240,795.53 and 491,235.17

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Solution

The fourth proportional to 899,126.55, 1,240,795.53 and 491,235.17 is: 677,905.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    899,126.55 : 1,240,795.53 = 491,235.17 : x
  2. Step 2: Convert to fraction form
    899,126.55/1,240,795.53 = 491,235.17/x
  3. Step 3: Cross multiply
    899,126.55x = 1,240,795.53 × 491,235.17
  4. Step 4: Simplify right side
    899,126.55x = 609,522,396,910.81
  5. Step 5: Solve for x
    x = 609,522,396,910.81/899,126.55
  6. Step 6: Final answer
    x = 677,905.01

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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.