Home / 398,971,007.20-598,834,424.40-245,915,999.20

Finding the Fourth Proportional to 398,971,007.20, 598,834,424.40 and 245,915,999.20

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Solution

The fourth proportional to 398,971,007.20, 598,834,424.40 and 245,915,999.20 is: 369,106,935.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,971,007.20 : 598,834,424.40 = 245,915,999.20 : x
  2. Step 2: Convert to fraction form
    398,971,007.20/598,834,424.40 = 245,915,999.20/x
  3. Step 3: Cross multiply
    398,971,007.20x = 598,834,424.40 × 245,915,999.20
  4. Step 4: Simplify right side
    398,971,007.20x = 147,262,965,831,682,848
  5. Step 5: Solve for x
    x = 147,262,965,831,682,848/398,971,007.20
  6. Step 6: Final answer
    x = 369,106,935.53

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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.