Home / 899,190.75-1,240,868.57-491,283.81

Finding the Fourth Proportional to 899,190.75, 1,240,868.57 and 491,283.81

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Solution

The fourth proportional to 899,190.75, 1,240,868.57 and 491,283.81 is: 677,963.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    899,190.75 : 1,240,868.57 = 491,283.81 : x
  2. Step 2: Convert to fraction form
    899,190.75/1,240,868.57 = 491,283.81/x
  3. Step 3: Cross multiply
    899,190.75x = 1,240,868.57 × 491,283.81
  4. Step 4: Simplify right side
    899,190.75x = 609,618,636,322.43
  5. Step 5: Solve for x
    x = 609,618,636,322.43/899,190.75
  6. Step 6: Final answer
    x = 677,963.64

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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.