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Finding the Fourth Proportional to 657,292.64, 907,063.84 and 355,486.64

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Solution

The fourth proportional to 657,292.64, 907,063.84 and 355,486.64 is: 490,571.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,292.64 : 907,063.84 = 355,486.64 : x
  2. Step 2: Convert to fraction form
    657,292.64/907,063.84 = 355,486.64/x
  3. Step 3: Cross multiply
    657,292.64x = 907,063.84 × 355,486.64
  4. Step 4: Simplify right side
    657,292.64x = 322,449,076,747.10
  5. Step 5: Solve for x
    x = 322,449,076,747.10/657,292.64
  6. Step 6: Final answer
    x = 490,571.56

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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.