Home / 413,321.40-619,982.10-409,384.80

Finding the Fourth Proportional to 413,321.40, 619,982.10 and 409,384.80

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Solution

The fourth proportional to 413,321.40, 619,982.10 and 409,384.80 is: 614,077.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,321.40 : 619,982.10 = 409,384.80 : x
  2. Step 2: Convert to fraction form
    413,321.40/619,982.10 = 409,384.80/x
  3. Step 3: Cross multiply
    413,321.40x = 619,982.10 × 409,384.80
  4. Step 4: Simplify right side
    413,321.40x = 253,811,248,012.08
  5. Step 5: Solve for x
    x = 253,811,248,012.08/413,321.40
  6. Step 6: Final answer
    x = 614,077.20

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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.