Home / 386,448,619.20-579,504,967.20-127,563,806.40

Finding the Fourth Proportional to 386,448,619.20, 579,504,967.20 and 127,563,806.40

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Solution

The fourth proportional to 386,448,619.20, 579,504,967.20 and 127,563,806.40 is: 191,290,266.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,448,619.20 : 579,504,967.20 = 127,563,806.40 : x
  2. Step 2: Convert to fraction form
    386,448,619.20/579,504,967.20 = 127,563,806.40/x
  3. Step 3: Cross multiply
    386,448,619.20x = 579,504,967.20 × 127,563,806.40
  4. Step 4: Simplify right side
    386,448,619.20x = 73,923,859,443,739,152
  5. Step 5: Solve for x
    x = 73,923,859,443,739,152/386,448,619.20
  6. Step 6: Final answer
    x = 191,290,266.73

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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.