Home / 1,115,272,664.40-1,672,908,996.60-388,019,672.40

Finding the Fourth Proportional to 1,115,272,664.40, 1,672,908,996.60 and 388,019,672.40

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Solution

The fourth proportional to 1,115,272,664.40, 1,672,908,996.60 and 388,019,672.40 is: 582,029,508.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,115,272,664.40 : 1,672,908,996.60 = 388,019,672.40 : x
  2. Step 2: Convert to fraction form
    1,115,272,664.40/1,672,908,996.60 = 388,019,672.40/x
  3. Step 3: Cross multiply
    1,115,272,664.40x = 1,672,908,996.60 × 388,019,672.40
  4. Step 4: Simplify right side
    1,115,272,664.40x = 649,121,600,815,744,640
  5. Step 5: Solve for x
    x = 649,121,600,815,744,640/1,115,272,664.40
  6. Step 6: Final answer
    x = 582,029,508.60

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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.