Home / 420,275,770.20-628,713,044.10-369,257,434.20

Finding the Fourth Proportional to 420,275,770.20, 628,713,044.10 and 369,257,434.20

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Solution

The fourth proportional to 420,275,770.20, 628,713,044.10 and 369,257,434.20 is: 552,391,981.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,275,770.20 : 628,713,044.10 = 369,257,434.20 : x
  2. Step 2: Convert to fraction form
    420,275,770.20/628,713,044.10 = 369,257,434.20/x
  3. Step 3: Cross multiply
    420,275,770.20x = 628,713,044.10 × 369,257,434.20
  4. Step 4: Simplify right side
    420,275,770.20x = 232,156,965,512,437,440
  5. Step 5: Solve for x
    x = 232,156,965,512,437,440/420,275,770.20
  6. Step 6: Final answer
    x = 552,391,981.58

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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.