Home / 631,986.95-872,145.07-345,507.05

Finding the Fourth Proportional to 631,986.95, 872,145.07 and 345,507.05

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Solution

The fourth proportional to 631,986.95, 872,145.07 and 345,507.05 is: 476,801.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,986.95 : 872,145.07 = 345,507.05 : x
  2. Step 2: Convert to fraction form
    631,986.95/872,145.07 = 345,507.05/x
  3. Step 3: Cross multiply
    631,986.95x = 872,145.07 × 345,507.05
  4. Step 4: Simplify right side
    631,986.95x = 301,332,265,083.25
  5. Step 5: Solve for x
    x = 301,332,265,083.25/631,986.95
  6. Step 6: Final answer
    x = 476,801.41

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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.