Home / 398,909,258.60-598,597,057.02-288,135,696.56

Finding the Fourth Proportional to 398,909,258.60, 598,597,057.02 and 288,135,696.56

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Solution

The fourth proportional to 398,909,258.60, 598,597,057.02 and 288,135,696.56 is: 432,371,964.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,909,258.60 : 598,597,057.02 = 288,135,696.56 : x
  2. Step 2: Convert to fraction form
    398,909,258.60/598,597,057.02 = 288,135,696.56/x
  3. Step 3: Cross multiply
    398,909,258.60x = 598,597,057.02 × 288,135,696.56
  4. Step 4: Simplify right side
    398,909,258.60x = 172,477,179,983,223,744
  5. Step 5: Solve for x
    x = 172,477,179,983,223,744/398,909,258.60
  6. Step 6: Final answer
    x = 432,371,964.96

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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.