Home / 2,128,855,649.90-2,937,789,531.51-1,189,072,006.70

Finding the Fourth Proportional to 2,128,855,649.90, 2,937,789,531.51 and 1,189,072,006.70

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Solution

The fourth proportional to 2,128,855,649.90, 2,937,789,531.51 and 1,189,072,006.70 is: 1,640,901,905.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128,855,649.90 : 2,937,789,531.51 = 1,189,072,006.70 : x
  2. Step 2: Convert to fraction form
    2,128,855,649.90/2,937,789,531.51 = 1,189,072,006.70/x
  3. Step 3: Cross multiply
    2,128,855,649.90x = 2,937,789,531.51 × 1,189,072,006.70
  4. Step 4: Simplify right side
    2,128,855,649.90x = 3,493,243,293,494,849,024
  5. Step 5: Solve for x
    x = 3,493,243,293,494,849,024/2,128,855,649.90
  6. Step 6: Final answer
    x = 1,640,901,905.99

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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.