Home / 720,200,380.28-993,877,533.29-390,175,519.28

Finding the Fourth Proportional to 720,200,380.28, 993,877,533.29 and 390,175,519.28

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Solution

The fourth proportional to 720,200,380.28, 993,877,533.29 and 390,175,519.28 is: 538,442,762.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,200,380.28 : 993,877,533.29 = 390,175,519.28 : x
  2. Step 2: Convert to fraction form
    720,200,380.28/993,877,533.29 = 390,175,519.28/x
  3. Step 3: Cross multiply
    720,200,380.28x = 993,877,533.29 × 390,175,519.28
  4. Step 4: Simplify right side
    720,200,380.28x = 387,786,682,650,200,320
  5. Step 5: Solve for x
    x = 387,786,682,650,200,320/720,200,380.28
  6. Step 6: Final answer
    x = 538,442,762.97

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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.