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Finding the Fourth Proportional to 657,335.70, 985,427.55 and 446,289.30

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Solution

The fourth proportional to 657,335.70, 985,427.55 and 446,289.30 is: 669,042.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,335.70 : 985,427.55 = 446,289.30 : x
  2. Step 2: Convert to fraction form
    657,335.70/985,427.55 = 446,289.30/x
  3. Step 3: Cross multiply
    657,335.70x = 985,427.55 × 446,289.30
  4. Step 4: Simplify right side
    657,335.70x = 439,785,771,490.22
  5. Step 5: Solve for x
    x = 439,785,771,490.22/657,335.70
  6. Step 6: Final answer
    x = 669,042.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.