Home / 399,311,999.80-598,967,999.70-282,410,726.20

Finding the Fourth Proportional to 399,311,999.80, 598,967,999.70 and 282,410,726.20

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Solution

The fourth proportional to 399,311,999.80, 598,967,999.70 and 282,410,726.20 is: 423,616,089.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,311,999.80 : 598,967,999.70 = 282,410,726.20 : x
  2. Step 2: Convert to fraction form
    399,311,999.80/598,967,999.70 = 282,410,726.20/x
  3. Step 3: Cross multiply
    399,311,999.80x = 598,967,999.70 × 282,410,726.20
  4. Step 4: Simplify right side
    399,311,999.80x = 169,154,987,765,838,400
  5. Step 5: Solve for x
    x = 169,154,987,765,838,400/399,311,999.80
  6. Step 6: Final answer
    x = 423,616,089.30

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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.