Home / 398,838,764.40-598,314,133.80-126,181,100.40

Finding the Fourth Proportional to 398,838,764.40, 598,314,133.80 and 126,181,100.40

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Solution

The fourth proportional to 398,838,764.40, 598,314,133.80 and 126,181,100.40 is: 189,289,363.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,838,764.40 : 598,314,133.80 = 126,181,100.40 : x
  2. Step 2: Convert to fraction form
    398,838,764.40/598,314,133.80 = 126,181,100.40/x
  3. Step 3: Cross multiply
    398,838,764.40x = 598,314,133.80 × 126,181,100.40
  4. Step 4: Simplify right side
    398,838,764.40x = 75,495,935,787,756,832
  5. Step 5: Solve for x
    x = 75,495,935,787,756,832/398,838,764.40
  6. Step 6: Final answer
    x = 189,289,363.34

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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.