Home / 865,459,592.56-1,298,199,361.56-312,803,992.72

Finding the Fourth Proportional to 865,459,592.56, 1,298,199,361.56 and 312,803,992.72

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Solution

The fourth proportional to 865,459,592.56, 1,298,199,361.56 and 312,803,992.72 is: 469,209,593.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,459,592.56 : 1,298,199,361.56 = 312,803,992.72 : x
  2. Step 2: Convert to fraction form
    865,459,592.56/1,298,199,361.56 = 312,803,992.72/x
  3. Step 3: Cross multiply
    865,459,592.56x = 1,298,199,361.56 × 312,803,992.72
  4. Step 4: Simplify right side
    865,459,592.56x = 406,081,943,640,981,504
  5. Step 5: Solve for x
    x = 406,081,943,640,981,504/865,459,592.56
  6. Step 6: Final answer
    x = 469,209,593.53

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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.