Home / 619,485.48-929,031.30-421,080.84

Finding the Fourth Proportional to 619,485.48, 929,031.30 and 421,080.84

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Solution

The fourth proportional to 619,485.48, 929,031.30 and 421,080.84 is: 631,487.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,485.48 : 929,031.30 = 421,080.84 : x
  2. Step 2: Convert to fraction form
    619,485.48/929,031.30 = 421,080.84/x
  3. Step 3: Cross multiply
    619,485.48x = 929,031.30 × 421,080.84
  4. Step 4: Simplify right side
    619,485.48x = 391,197,280,190.29
  5. Step 5: Solve for x
    x = 391,197,280,190.29/619,485.48
  6. Step 6: Final answer
    x = 631,487.41

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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.