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Finding the Fourth Proportional to 657,285.88, 907,054.51 and 355,479.88

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Solution

The fourth proportional to 657,285.88, 907,054.51 and 355,479.88 is: 490,562.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,285.88 : 907,054.51 = 355,479.88 : x
  2. Step 2: Convert to fraction form
    657,285.88/907,054.51 = 355,479.88/x
  3. Step 3: Cross multiply
    657,285.88x = 907,054.51 × 355,479.88
  4. Step 4: Simplify right side
    657,285.88x = 322,439,623,832.99
  5. Step 5: Solve for x
    x = 322,439,623,832.99/657,285.88
  6. Step 6: Final answer
    x = 490,562.23

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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.