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Finding the Fourth Proportional to 298,988,811.30, 417,563,969.10 and 298,988,811.30

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Solution

The fourth proportional to 298,988,811.30, 417,563,969.10 and 298,988,811.30 is: 417,563,969.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,988,811.30 : 417,563,969.10 = 298,988,811.30 : x
  2. Step 2: Convert to fraction form
    298,988,811.30/417,563,969.10 = 298,988,811.30/x
  3. Step 3: Cross multiply
    298,988,811.30x = 417,563,969.10 × 298,988,811.30
  4. Step 4: Simplify right side
    298,988,811.30x = 124,846,954,762,918,944
  5. Step 5: Solve for x
    x = 124,846,954,762,918,944/298,988,811.30
  6. Step 6: Final answer
    x = 417,563,969.10

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.