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Finding the Fourth Proportional to 643,808,349.34, 888,404,867.64 and 365,349,871.96

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Solution

The fourth proportional to 643,808,349.34, 888,404,867.64 and 365,349,871.96 is: 504,154,077.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,808,349.34 : 888,404,867.64 = 365,349,871.96 : x
  2. Step 2: Convert to fraction form
    643,808,349.34/888,404,867.64 = 365,349,871.96/x
  3. Step 3: Cross multiply
    643,808,349.34x = 888,404,867.64 × 365,349,871.96
  4. Step 4: Simplify right side
    643,808,349.34x = 324,578,604,640,914,752
  5. Step 5: Solve for x
    x = 324,578,604,640,914,752/643,808,349.34
  6. Step 6: Final answer
    x = 504,154,077.80

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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.