Home / 426,385,205.80-639,577,808.70-395,774,204.20

Finding the Fourth Proportional to 426,385,205.80, 639,577,808.70 and 395,774,204.20

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Solution

The fourth proportional to 426,385,205.80, 639,577,808.70 and 395,774,204.20 is: 593,661,306.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,385,205.80 : 639,577,808.70 = 395,774,204.20 : x
  2. Step 2: Convert to fraction form
    426,385,205.80/639,577,808.70 = 395,774,204.20/x
  3. Step 3: Cross multiply
    426,385,205.80x = 639,577,808.70 × 395,774,204.20
  4. Step 4: Simplify right side
    426,385,205.80x = 253,128,398,262,222,336
  5. Step 5: Solve for x
    x = 253,128,398,262,222,336/426,385,205.80
  6. Step 6: Final answer
    x = 593,661,306.30

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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.