Home / 685,168,815.68-945,508,496.69-387,804,672.80

Finding the Fourth Proportional to 685,168,815.68, 945,508,496.69 and 387,804,672.80

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Solution

The fourth proportional to 685,168,815.68, 945,508,496.69 and 387,804,672.80 is: 535,156,599.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,168,815.68 : 945,508,496.69 = 387,804,672.80 : x
  2. Step 2: Convert to fraction form
    685,168,815.68/945,508,496.69 = 387,804,672.80/x
  3. Step 3: Cross multiply
    685,168,815.68x = 945,508,496.69 × 387,804,672.80
  4. Step 4: Simplify right side
    685,168,815.68x = 366,672,613,186,386,944
  5. Step 5: Solve for x
    x = 366,672,613,186,386,944/685,168,815.68
  6. Step 6: Final answer
    x = 535,156,599.07

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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.