Home / 783,139.70-1,174,709.55-409,114.10

Finding the Fourth Proportional to 783,139.70, 1,174,709.55 and 409,114.10

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Solution

The fourth proportional to 783,139.70, 1,174,709.55 and 409,114.10 is: 613,671.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,139.70 : 1,174,709.55 = 409,114.10 : x
  2. Step 2: Convert to fraction form
    783,139.70/1,174,709.55 = 409,114.10/x
  3. Step 3: Cross multiply
    783,139.70x = 1,174,709.55 × 409,114.10
  4. Step 4: Simplify right side
    783,139.70x = 480,590,240,309.66
  5. Step 5: Solve for x
    x = 480,590,240,309.66/783,139.70
  6. Step 6: Final answer
    x = 613,671.15

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Double scale
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Similar ratio
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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.