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Finding the Fourth Proportional to 561,361,504.80, 774,639,549.99 and 326,395,495.47

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Solution

The fourth proportional to 561,361,504.80, 774,639,549.99 and 326,395,495.47 is: 450,402,917.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,361,504.80 : 774,639,549.99 = 326,395,495.47 : x
  2. Step 2: Convert to fraction form
    561,361,504.80/774,639,549.99 = 326,395,495.47/x
  3. Step 3: Cross multiply
    561,361,504.80x = 774,639,549.99 × 326,395,495.47
  4. Step 4: Simplify right side
    561,361,504.80x = 252,838,859,729,643,904
  5. Step 5: Solve for x
    x = 252,838,859,729,643,904/561,361,504.80
  6. Step 6: Final answer
    x = 450,402,917.85

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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.