Home / 312,126,426-468,188,302.32-78,959,345.04

Finding the Fourth Proportional to 312,126,426, 468,188,302.32 and 78,959,345.04

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Solution

The fourth proportional to 312,126,426, 468,188,302.32 and 78,959,345.04 is: 118,438,679.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,126,426 : 468,188,302.32 = 78,959,345.04 : x
  2. Step 2: Convert to fraction form
    312,126,426/468,188,302.32 = 78,959,345.04/x
  3. Step 3: Cross multiply
    312,126,426x = 468,188,302.32 × 78,959,345.04
  4. Step 4: Simplify right side
    312,126,426x = 36,967,841,706,576,712
  5. Step 5: Solve for x
    x = 36,967,841,706,576,712/312,126,426
  6. Step 6: Final answer
    x = 118,438,679.42

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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.