Home / 1,171,510.56-1,755,259.65-639,405

Finding the Fourth Proportional to 1,171,510.56, 1,755,259.65 and 639,405

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Solution

The fourth proportional to 1,171,510.56, 1,755,259.65 and 639,405 is: 958,012.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,171,510.56 : 1,755,259.65 = 639,405 : x
  2. Step 2: Convert to fraction form
    1,171,510.56/1,755,259.65 = 639,405/x
  3. Step 3: Cross multiply
    1,171,510.56x = 1,755,259.65 × 639,405
  4. Step 4: Simplify right side
    1,171,510.56x = 1,122,321,796,508.25
  5. Step 5: Solve for x
    x = 1,122,321,796,508.25/1,171,510.56
  6. Step 6: Final answer
    x = 958,012.53

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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.