Home / 679,473,890.32-937,659,271.78-393,377,481.38

Finding the Fourth Proportional to 679,473,890.32, 937,659,271.78 and 393,377,481.38

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Solution

The fourth proportional to 679,473,890.32, 937,659,271.78 and 393,377,481.38 is: 542,852,415.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,473,890.32 : 937,659,271.78 = 393,377,481.38 : x
  2. Step 2: Convert to fraction form
    679,473,890.32/937,659,271.78 = 393,377,481.38/x
  3. Step 3: Cross multiply
    679,473,890.32x = 937,659,271.78 × 393,377,481.38
  4. Step 4: Simplify right side
    679,473,890.32x = 368,854,042,725,421,312
  5. Step 5: Solve for x
    x = 368,854,042,725,421,312/679,473,890.32
  6. Step 6: Final answer
    x = 542,852,415.64

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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.