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Finding the Fourth Proportional to 631,554.60, 871,551.47 and 345,074.66

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Solution

The fourth proportional to 631,554.60, 871,551.47 and 345,074.66 is: 476,206.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,554.60 : 871,551.47 = 345,074.66 : x
  2. Step 2: Convert to fraction form
    631,554.60/871,551.47 = 345,074.66/x
  3. Step 3: Cross multiply
    631,554.60x = 871,551.47 × 345,074.66
  4. Step 4: Simplify right side
    631,554.60x = 300,750,327,182.75
  5. Step 5: Solve for x
    x = 300,750,327,182.75/631,554.60
  6. Step 6: Final answer
    x = 476,206.38

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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.