Home / 813,564,066.10-1,220,346,099.15-425,505,847.90

Finding the Fourth Proportional to 813,564,066.10, 1,220,346,099.15 and 425,505,847.90

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Solution

The fourth proportional to 813,564,066.10, 1,220,346,099.15 and 425,505,847.90 is: 638,258,771.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,564,066.10 : 1,220,346,099.15 = 425,505,847.90 : x
  2. Step 2: Convert to fraction form
    813,564,066.10/1,220,346,099.15 = 425,505,847.90/x
  3. Step 3: Cross multiply
    813,564,066.10x = 1,220,346,099.15 × 425,505,847.90
  4. Step 4: Simplify right side
    813,564,066.10x = 519,264,401,650,278,208
  5. Step 5: Solve for x
    x = 519,264,401,650,278,208/813,564,066.10
  6. Step 6: Final answer
    x = 638,258,771.85

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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.