Home / 808,218.20-1,213,061.70-409,136.60

Finding the Fourth Proportional to 808,218.20, 1,213,061.70 and 409,136.60

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Solution

The fourth proportional to 808,218.20, 1,213,061.70 and 409,136.60 is: 614,076.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,218.20 : 1,213,061.70 = 409,136.60 : x
  2. Step 2: Convert to fraction form
    808,218.20/1,213,061.70 = 409,136.60/x
  3. Step 3: Cross multiply
    808,218.20x = 1,213,061.70 × 409,136.60
  4. Step 4: Simplify right side
    808,218.20x = 496,307,939,528.22
  5. Step 5: Solve for x
    x = 496,307,939,528.22/808,218.20
  6. Step 6: Final answer
    x = 614,076.67

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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.