Home / 783,114.70-1,174,672.05-409,089.10

Finding the Fourth Proportional to 783,114.70, 1,174,672.05 and 409,089.10

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Solution

The fourth proportional to 783,114.70, 1,174,672.05 and 409,089.10 is: 613,633.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,114.70 : 1,174,672.05 = 409,089.10 : x
  2. Step 2: Convert to fraction form
    783,114.70/1,174,672.05 = 409,089.10/x
  3. Step 3: Cross multiply
    783,114.70x = 1,174,672.05 × 409,089.10
  4. Step 4: Simplify right side
    783,114.70x = 480,545,531,729.66
  5. Step 5: Solve for x
    x = 480,545,531,729.66/783,114.70
  6. Step 6: Final answer
    x = 613,633.65

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.