Home / 814,346,824.80-1,221,520,237.20-426,019,605.60

Finding the Fourth Proportional to 814,346,824.80, 1,221,520,237.20 and 426,019,605.60

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Solution

The fourth proportional to 814,346,824.80, 1,221,520,237.20 and 426,019,605.60 is: 639,029,408.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,346,824.80 : 1,221,520,237.20 = 426,019,605.60 : x
  2. Step 2: Convert to fraction form
    814,346,824.80/1,221,520,237.20 = 426,019,605.60/x
  3. Step 3: Cross multiply
    814,346,824.80x = 1,221,520,237.20 × 426,019,605.60
  4. Step 4: Simplify right side
    814,346,824.80x = 520,391,569,684,362,496
  5. Step 5: Solve for x
    x = 520,391,569,684,362,496/814,346,824.80
  6. Step 6: Final answer
    x = 639,029,408.40

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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.