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Finding the Fourth Proportional to 657,730.99, 907,052.78 and 436,577.16

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Solution

The fourth proportional to 657,730.99, 907,052.78 and 436,577.16 is: 602,067.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,730.99 : 907,052.78 = 436,577.16 : x
  2. Step 2: Convert to fraction form
    657,730.99/907,052.78 = 436,577.16/x
  3. Step 3: Cross multiply
    657,730.99x = 907,052.78 × 436,577.16
  4. Step 4: Simplify right side
    657,730.99x = 395,998,526,662.51
  5. Step 5: Solve for x
    x = 395,998,526,662.51/657,730.99
  6. Step 6: Final answer
    x = 602,067.61

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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.