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Finding the Fourth Proportional to 538,646.80, 755,505.20 and 538,646.80

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Solution

The fourth proportional to 538,646.80, 755,505.20 and 538,646.80 is: 755,505.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,646.80 : 755,505.20 = 538,646.80 : x
  2. Step 2: Convert to fraction form
    538,646.80/755,505.20 = 538,646.80/x
  3. Step 3: Cross multiply
    538,646.80x = 755,505.20 × 538,646.80
  4. Step 4: Simplify right side
    538,646.80x = 406,950,458,363.36
  5. Step 5: Solve for x
    x = 406,950,458,363.36/538,646.80
  6. Step 6: Final answer
    x = 755,505.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.