Home / 939,415,943.89-1,296,238,334.97-542,975,916.97

Finding the Fourth Proportional to 939,415,943.89, 1,296,238,334.97 and 542,975,916.97

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Solution

The fourth proportional to 939,415,943.89, 1,296,238,334.97 and 542,975,916.97 is: 749,216,790.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,415,943.89 : 1,296,238,334.97 = 542,975,916.97 : x
  2. Step 2: Convert to fraction form
    939,415,943.89/1,296,238,334.97 = 542,975,916.97/x
  3. Step 3: Cross multiply
    939,415,943.89x = 1,296,238,334.97 × 542,975,916.97
  4. Step 4: Simplify right side
    939,415,943.89x = 703,826,198,542,001,792
  5. Step 5: Solve for x
    x = 703,826,198,542,001,792/939,415,943.89
  6. Step 6: Final answer
    x = 749,216,790.62

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.