Home / 631,724.54-871,780.34-345,244.66

Finding the Fourth Proportional to 631,724.54, 871,780.34 and 345,244.66

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Solution

The fourth proportional to 631,724.54, 871,780.34 and 345,244.66 is: 476,437.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,724.54 : 871,780.34 = 345,244.66 : x
  2. Step 2: Convert to fraction form
    631,724.54/871,780.34 = 345,244.66/x
  3. Step 3: Cross multiply
    631,724.54x = 871,780.34 × 345,244.66
  4. Step 4: Simplify right side
    631,724.54x = 300,977,507,077.98
  5. Step 5: Solve for x
    x = 300,977,507,077.98/631,724.54
  6. Step 6: Final answer
    x = 476,437.89

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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.