Home / 312,988,469,911.89-469,509,748,977.34-86,347,921,952.24

Finding the Fourth Proportional to 312,988,469,911.89, 469,509,748,977.34 and 86,347,921,952.24

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Solution

The fourth proportional to 312,988,469,911.89, 469,509,748,977.34 and 86,347,921,952.24 is: 129,529,343,914.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,988,469,911.89 : 469,509,748,977.34 = 86,347,921,952.24 : x
  2. Step 2: Convert to fraction form
    312,988,469,911.89/469,509,748,977.34 = 86,347,921,952.24/x
  3. Step 3: Cross multiply
    312,988,469,911.89x = 469,509,748,977.34 × 86,347,921,952.24
  4. Step 4: Simplify right side
    312,988,469,911.89x = 40,541,191,160,511,149,899,776
  5. Step 5: Solve for x
    x = 40,541,191,160,511,149,899,776/312,988,469,911.89
  6. Step 6: Final answer
    x = 129,529,343,914.57

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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.