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Finding the Fourth Proportional to 657,103.80, 985,655.70 and 657,103.80

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Solution

The fourth proportional to 657,103.80, 985,655.70 and 657,103.80 is: 985,655.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,103.80 : 985,655.70 = 657,103.80 : x
  2. Step 2: Convert to fraction form
    657,103.80/985,655.70 = 657,103.80/x
  3. Step 3: Cross multiply
    657,103.80x = 985,655.70 × 657,103.80
  4. Step 4: Simplify right side
    657,103.80x = 647,678,105,961.66
  5. Step 5: Solve for x
    x = 647,678,105,961.66/657,103.80
  6. Step 6: Final answer
    x = 985,655.70

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Half scale
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Double scale
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Similar ratio
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1.5x scale

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.