Home / 500,465,473.20-690,635,684.16-280,453,195.44

Finding the Fourth Proportional to 500,465,473.20, 690,635,684.16 and 280,453,195.44

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Solution

The fourth proportional to 500,465,473.20, 690,635,684.16 and 280,453,195.44 is: 387,021,672.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,465,473.20 : 690,635,684.16 = 280,453,195.44 : x
  2. Step 2: Convert to fraction form
    500,465,473.20/690,635,684.16 = 280,453,195.44/x
  3. Step 3: Cross multiply
    500,465,473.20x = 690,635,684.16 × 280,453,195.44
  4. Step 4: Simplify right side
    500,465,473.20x = 193,690,984,507,562,592
  5. Step 5: Solve for x
    x = 193,690,984,507,562,592/500,465,473.20
  6. Step 6: Final answer
    x = 387,021,672.58

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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.