Home / 386,587,865.16-533,491,340.94-212,747,609.16

Finding the Fourth Proportional to 386,587,865.16, 533,491,340.94 and 212,747,609.16

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Solution

The fourth proportional to 386,587,865.16, 533,491,340.94 and 212,747,609.16 is: 293,591,748.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,587,865.16 : 533,491,340.94 = 212,747,609.16 : x
  2. Step 2: Convert to fraction form
    386,587,865.16/533,491,340.94 = 212,747,609.16/x
  3. Step 3: Cross multiply
    386,587,865.16x = 533,491,340.94 × 212,747,609.16
  4. Step 4: Simplify right side
    386,587,865.16x = 113,499,007,292,547,424
  5. Step 5: Solve for x
    x = 113,499,007,292,547,424/386,587,865.16
  6. Step 6: Final answer
    x = 293,591,748.53

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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.