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Finding the Fourth Proportional to 657,754.88, 907,704.56 and 355,948.88

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Solution

The fourth proportional to 657,754.88, 907,704.56 and 355,948.88 is: 491,210.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,754.88 : 907,704.56 = 355,948.88 : x
  2. Step 2: Convert to fraction form
    657,754.88/907,704.56 = 355,948.88/x
  3. Step 3: Cross multiply
    657,754.88x = 907,704.56 × 355,948.88
  4. Step 4: Simplify right side
    657,754.88x = 323,096,421,502.89
  5. Step 5: Solve for x
    x = 323,096,421,502.89/657,754.88
  6. Step 6: Final answer
    x = 491,210.98

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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.