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Finding the Fourth Proportional to 657,399.48, 907,254 and 370,815

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Solution

The fourth proportional to 657,399.48, 907,254 and 370,815 is: 511,748.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,399.48 : 907,254 = 370,815 : x
  2. Step 2: Convert to fraction form
    657,399.48/907,254 = 370,815/x
  3. Step 3: Cross multiply
    657,399.48x = 907,254 × 370,815
  4. Step 4: Simplify right side
    657,399.48x = 336,423,392,010
  5. Step 5: Solve for x
    x = 336,423,392,010/657,399.48
  6. Step 6: Final answer
    x = 511,748.80

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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.