Home / 939,415,942.89-1,296,238,333.59-542,975,915.97

Finding the Fourth Proportional to 939,415,942.89, 1,296,238,333.59 and 542,975,915.97

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Solution

The fourth proportional to 939,415,942.89, 1,296,238,333.59 and 542,975,915.97 is: 749,216,789.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,415,942.89 : 1,296,238,333.59 = 542,975,915.97 : x
  2. Step 2: Convert to fraction form
    939,415,942.89/1,296,238,333.59 = 542,975,915.97/x
  3. Step 3: Cross multiply
    939,415,942.89x = 1,296,238,333.59 × 542,975,915.97
  4. Step 4: Simplify right side
    939,415,942.89x = 703,826,196,496,456,704
  5. Step 5: Solve for x
    x = 703,826,196,496,456,704/939,415,942.89
  6. Step 6: Final answer
    x = 749,216,789.24

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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.