Home / 1,347,480,045.20-2,021,220,067.80-427,428,390.80

Finding the Fourth Proportional to 1,347,480,045.20, 2,021,220,067.80 and 427,428,390.80

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Solution

The fourth proportional to 1,347,480,045.20, 2,021,220,067.80 and 427,428,390.80 is: 641,142,586.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,347,480,045.20 : 2,021,220,067.80 = 427,428,390.80 : x
  2. Step 2: Convert to fraction form
    1,347,480,045.20/2,021,220,067.80 = 427,428,390.80/x
  3. Step 3: Cross multiply
    1,347,480,045.20x = 2,021,220,067.80 × 427,428,390.80
  4. Step 4: Simplify right side
    1,347,480,045.20x = 863,926,841,032,420,864
  5. Step 5: Solve for x
    x = 863,926,841,032,420,864/1,347,480,045.20
  6. Step 6: Final answer
    x = 641,142,586.20

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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.