Home / 432,685,999.40-649,028,999.10-125,988,117.80

Finding the Fourth Proportional to 432,685,999.40, 649,028,999.10 and 125,988,117.80

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Solution

The fourth proportional to 432,685,999.40, 649,028,999.10 and 125,988,117.80 is: 188,982,176.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,685,999.40 : 649,028,999.10 = 125,988,117.80 : x
  2. Step 2: Convert to fraction form
    432,685,999.40/649,028,999.10 = 125,988,117.80/x
  3. Step 3: Cross multiply
    432,685,999.40x = 649,028,999.10 × 125,988,117.80
  4. Step 4: Simplify right side
    432,685,999.40x = 81,769,941,994,226,896
  5. Step 5: Solve for x
    x = 81,769,941,994,226,896/432,685,999.40
  6. Step 6: Final answer
    x = 188,982,176.70

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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.