Home / 649,628,940.80-974,443,411.20-391,348,614.80

Finding the Fourth Proportional to 649,628,940.80, 974,443,411.20 and 391,348,614.80

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Solution

The fourth proportional to 649,628,940.80, 974,443,411.20 and 391,348,614.80 is: 587,022,922.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,628,940.80 : 974,443,411.20 = 391,348,614.80 : x
  2. Step 2: Convert to fraction form
    649,628,940.80/974,443,411.20 = 391,348,614.80/x
  3. Step 3: Cross multiply
    649,628,940.80x = 974,443,411.20 × 391,348,614.80
  4. Step 4: Simplify right side
    649,628,940.80x = 381,347,079,174,106,816
  5. Step 5: Solve for x
    x = 381,347,079,174,106,816/649,628,940.80
  6. Step 6: Final answer
    x = 587,022,922.20

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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.