Home / 398,601,220.80-597,901,831.20-389,643,268.80

Finding the Fourth Proportional to 398,601,220.80, 597,901,831.20 and 389,643,268.80

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Solution

The fourth proportional to 398,601,220.80, 597,901,831.20 and 389,643,268.80 is: 584,464,903.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,601,220.80 : 597,901,831.20 = 389,643,268.80 : x
  2. Step 2: Convert to fraction form
    398,601,220.80/597,901,831.20 = 389,643,268.80/x
  3. Step 3: Cross multiply
    398,601,220.80x = 597,901,831.20 × 389,643,268.80
  4. Step 4: Simplify right side
    398,601,220.80x = 232,968,423,930,273,856
  5. Step 5: Solve for x
    x = 232,968,423,930,273,856/398,601,220.80
  6. Step 6: Final answer
    x = 584,464,903.20

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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.