Home / 389,577,375,389.30-537,616,766,387.75-215,962,074,902.07

Finding the Fourth Proportional to 389,577,375,389.30, 537,616,766,387.75 and 215,962,074,902.07

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Solution

The fourth proportional to 389,577,375,389.30, 537,616,766,387.75 and 215,962,074,902.07 is: 298,027,656,906.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,577,375,389.30 : 537,616,766,387.75 = 215,962,074,902.07 : x
  2. Step 2: Convert to fraction form
    389,577,375,389.30/537,616,766,387.75 = 215,962,074,902.07/x
  3. Step 3: Cross multiply
    389,577,375,389.30x = 537,616,766,387.75 × 215,962,074,902.07
  4. Step 4: Simplify right side
    389,577,375,389.30x = 116,104,832,371,239,939,997,696
  5. Step 5: Solve for x
    x = 116,104,832,371,239,939,997,696/389,577,375,389.30
  6. Step 6: Final answer
    x = 298,027,656,906.97

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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.