Home / 431,400,622.70-647,100,934.05-299,390,678.30

Finding the Fourth Proportional to 431,400,622.70, 647,100,934.05 and 299,390,678.30

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Solution

The fourth proportional to 431,400,622.70, 647,100,934.05 and 299,390,678.30 is: 449,086,017.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,400,622.70 : 647,100,934.05 = 299,390,678.30 : x
  2. Step 2: Convert to fraction form
    431,400,622.70/647,100,934.05 = 299,390,678.30/x
  3. Step 3: Cross multiply
    431,400,622.70x = 647,100,934.05 × 299,390,678.30
  4. Step 4: Simplify right side
    431,400,622.70x = 193,735,987,573,793,056
  5. Step 5: Solve for x
    x = 193,735,987,573,793,056/431,400,622.70
  6. Step 6: Final answer
    x = 449,086,017.45

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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.