Home / 684,983,876.20-945,277,755.42-371,718,089.68

Finding the Fourth Proportional to 684,983,876.20, 945,277,755.42 and 371,718,089.68

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Solution

The fourth proportional to 684,983,876.20, 945,277,755.42 and 371,718,089.68 is: 512,970,967.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,983,876.20 : 945,277,755.42 = 371,718,089.68 : x
  2. Step 2: Convert to fraction form
    684,983,876.20/945,277,755.42 = 371,718,089.68/x
  3. Step 3: Cross multiply
    684,983,876.20x = 945,277,755.42 × 371,718,089.68
  4. Step 4: Simplify right side
    684,983,876.20x = 351,376,841,461,720,640
  5. Step 5: Solve for x
    x = 351,376,841,461,720,640/684,983,876.20
  6. Step 6: Final answer
    x = 512,970,967.16

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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.