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Finding the Fourth Proportional to 571,990,766, 857,858,461.32 and 265,243,020.08

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Solution

The fourth proportional to 571,990,766, 857,858,461.32 and 265,243,020.08 is: 397,805,318.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,990,766 : 857,858,461.32 = 265,243,020.08 : x
  2. Step 2: Convert to fraction form
    571,990,766/857,858,461.32 = 265,243,020.08/x
  3. Step 3: Cross multiply
    571,990,766x = 857,858,461.32 × 265,243,020.08
  4. Step 4: Simplify right side
    571,990,766x = 227,540,969,081,698,688
  5. Step 5: Solve for x
    x = 227,540,969,081,698,688/571,990,766
  6. Step 6: Final answer
    x = 397,805,318.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.