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Finding the Fourth Proportional to 672,012.45, 927,377.17 and 370,206.45

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Solution

The fourth proportional to 672,012.45, 927,377.17 and 370,206.45 is: 510,884.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,012.45 : 927,377.17 = 370,206.45 : x
  2. Step 2: Convert to fraction form
    672,012.45/927,377.17 = 370,206.45/x
  3. Step 3: Cross multiply
    672,012.45x = 927,377.17 × 370,206.45
  4. Step 4: Simplify right side
    672,012.45x = 343,321,008,991.23
  5. Step 5: Solve for x
    x = 343,321,008,991.23/672,012.45
  6. Step 6: Final answer
    x = 510,884.89

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.