Home / 485,148,529.80-727,722,794.70-399,055,087.80

Finding the Fourth Proportional to 485,148,529.80, 727,722,794.70 and 399,055,087.80

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Solution

The fourth proportional to 485,148,529.80, 727,722,794.70 and 399,055,087.80 is: 598,582,631.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,148,529.80 : 727,722,794.70 = 399,055,087.80 : x
  2. Step 2: Convert to fraction form
    485,148,529.80/727,722,794.70 = 399,055,087.80/x
  3. Step 3: Cross multiply
    485,148,529.80x = 727,722,794.70 × 399,055,087.80
  4. Step 4: Simplify right side
    485,148,529.80x = 290,401,483,733,069,888
  5. Step 5: Solve for x
    x = 290,401,483,733,069,888/485,148,529.80
  6. Step 6: Final answer
    x = 598,582,631.70

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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.