Home / 718,086,336.84-991,003,553.55-396,212,730.57

Finding the Fourth Proportional to 718,086,336.84, 991,003,553.55 and 396,212,730.57

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Solution

The fourth proportional to 718,086,336.84, 991,003,553.55 and 396,212,730.57 is: 546,798,071.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,086,336.84 : 991,003,553.55 = 396,212,730.57 : x
  2. Step 2: Convert to fraction form
    718,086,336.84/991,003,553.55 = 396,212,730.57/x
  3. Step 3: Cross multiply
    718,086,336.84x = 991,003,553.55 × 396,212,730.57
  4. Step 4: Simplify right side
    718,086,336.84x = 392,648,223,956,618,688
  5. Step 5: Solve for x
    x = 392,648,223,956,618,688/718,086,336.84
  6. Step 6: Final answer
    x = 546,798,071.22

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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.