Home / 698,279,445.12-1,046,233,845.08-421,348,738.50

Finding the Fourth Proportional to 698,279,445.12, 1,046,233,845.08 and 421,348,738.50

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Solution

The fourth proportional to 698,279,445.12, 1,046,233,845.08 and 421,348,738.50 is: 631,307,872.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,279,445.12 : 1,046,233,845.08 = 421,348,738.50 : x
  2. Step 2: Convert to fraction form
    698,279,445.12/1,046,233,845.08 = 421,348,738.50/x
  3. Step 3: Cross multiply
    698,279,445.12x = 1,046,233,845.08 × 421,348,738.50
  4. Step 4: Simplify right side
    698,279,445.12x = 440,829,310,800,462,464
  5. Step 5: Solve for x
    x = 440,829,310,800,462,464/698,279,445.12
  6. Step 6: Final answer
    x = 631,307,872.34

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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.