Home / 790,432,116.63-1,090,802,819.46-438,013,992.63

Finding the Fourth Proportional to 790,432,116.63, 1,090,802,819.46 and 438,013,992.63

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Solution

The fourth proportional to 790,432,116.63, 1,090,802,819.46 and 438,013,992.63 is: 604,462,910.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,432,116.63 : 1,090,802,819.46 = 438,013,992.63 : x
  2. Step 2: Convert to fraction form
    790,432,116.63/1,090,802,819.46 = 438,013,992.63/x
  3. Step 3: Cross multiply
    790,432,116.63x = 1,090,802,819.46 × 438,013,992.63
  4. Step 4: Simplify right side
    790,432,116.63x = 477,786,898,123,735,680
  5. Step 5: Solve for x
    x = 477,786,898,123,735,680/790,432,116.63
  6. Step 6: Final answer
    x = 604,462,910.95

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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.