Home / 399,417,999.80-599,126,999.70-195,077,161.40

Finding the Fourth Proportional to 399,417,999.80, 599,126,999.70 and 195,077,161.40

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Solution

The fourth proportional to 399,417,999.80, 599,126,999.70 and 195,077,161.40 is: 292,615,742.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,417,999.80 : 599,126,999.70 = 195,077,161.40 : x
  2. Step 2: Convert to fraction form
    399,417,999.80/599,126,999.70 = 195,077,161.40/x
  3. Step 3: Cross multiply
    399,417,999.80x = 599,126,999.70 × 195,077,161.40
  4. Step 4: Simplify right side
    399,417,999.80x = 116,875,994,419,574,672
  5. Step 5: Solve for x
    x = 116,875,994,419,574,672/399,417,999.80
  6. Step 6: Final answer
    x = 292,615,742.10

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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.