Home / 927,861,920.80-1,391,573,131.44-345,869,378.08

Finding the Fourth Proportional to 927,861,920.80, 1,391,573,131.44 and 345,869,378.08

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Solution

The fourth proportional to 927,861,920.80, 1,391,573,131.44 and 345,869,378.08 is: 518,722,153.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    927,861,920.80 : 1,391,573,131.44 = 345,869,378.08 : x
  2. Step 2: Convert to fraction form
    927,861,920.80/1,391,573,131.44 = 345,869,378.08/x
  3. Step 3: Cross multiply
    927,861,920.80x = 1,391,573,131.44 × 345,869,378.08
  4. Step 4: Simplify right side
    927,861,920.80x = 481,302,533,523,990,912
  5. Step 5: Solve for x
    x = 481,302,533,523,990,912/927,861,920.80
  6. Step 6: Final answer
    x = 518,722,153.30

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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.