Home / 472,393,987.20-708,590,980.80-324,440,812.80

Finding the Fourth Proportional to 472,393,987.20, 708,590,980.80 and 324,440,812.80

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Solution

The fourth proportional to 472,393,987.20, 708,590,980.80 and 324,440,812.80 is: 486,661,219.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,393,987.20 : 708,590,980.80 = 324,440,812.80 : x
  2. Step 2: Convert to fraction form
    472,393,987.20/708,590,980.80 = 324,440,812.80/x
  3. Step 3: Cross multiply
    472,393,987.20x = 708,590,980.80 × 324,440,812.80
  4. Step 4: Simplify right side
    472,393,987.20x = 229,895,833,753,501,184
  5. Step 5: Solve for x
    x = 229,895,833,753,501,184/472,393,987.20
  6. Step 6: Final answer
    x = 486,661,219.20

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Similar ratio
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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.