Home / 721,823,662.35-996,090,878.79-408,551,148.45

Finding the Fourth Proportional to 721,823,662.35, 996,090,878.79 and 408,551,148.45

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Solution

The fourth proportional to 721,823,662.35, 996,090,878.79 and 408,551,148.45 is: 563,785,996.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,823,662.35 : 996,090,878.79 = 408,551,148.45 : x
  2. Step 2: Convert to fraction form
    721,823,662.35/996,090,878.79 = 408,551,148.45/x
  3. Step 3: Cross multiply
    721,823,662.35x = 996,090,878.79 × 408,551,148.45
  4. Step 4: Simplify right side
    721,823,662.35x = 406,954,072,490,224,192
  5. Step 5: Solve for x
    x = 406,954,072,490,224,192/721,823,662.35
  6. Step 6: Final answer
    x = 563,785,996.11

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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.