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Finding the Fourth Proportional to 631,553.58, 871,542.60 and 345,075.72

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Solution

The fourth proportional to 631,553.58, 871,542.60 and 345,075.72 is: 476,203.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,553.58 : 871,542.60 = 345,075.72 : x
  2. Step 2: Convert to fraction form
    631,553.58/871,542.60 = 345,075.72/x
  3. Step 3: Cross multiply
    631,553.58x = 871,542.60 × 345,075.72
  4. Step 4: Simplify right side
    631,553.58x = 300,748,190,205.67
  5. Step 5: Solve for x
    x = 300,748,190,205.67/631,553.58
  6. Step 6: Final answer
    x = 476,203.76

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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.