Home / 865,301,730.96-1,297,954,220.28-210,253,311.66

Finding the Fourth Proportional to 865,301,730.96, 1,297,954,220.28 and 210,253,311.66

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Solution

The fourth proportional to 865,301,730.96, 1,297,954,220.28 and 210,253,311.66 is: 315,380,362.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,301,730.96 : 1,297,954,220.28 = 210,253,311.66 : x
  2. Step 2: Convert to fraction form
    865,301,730.96/1,297,954,220.28 = 210,253,311.66/x
  3. Step 3: Cross multiply
    865,301,730.96x = 1,297,954,220.28 × 210,253,311.66
  4. Step 4: Simplify right side
    865,301,730.96x = 272,899,173,196,943,136
  5. Step 5: Solve for x
    x = 272,899,173,196,943,136/865,301,730.96
  6. Step 6: Final answer
    x = 315,380,362.05

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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.