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Finding the Fourth Proportional to 654,407.80, 981,611.70 and 496,943.80

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Solution

The fourth proportional to 654,407.80, 981,611.70 and 496,943.80 is: 745,415.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,407.80 : 981,611.70 = 496,943.80 : x
  2. Step 2: Convert to fraction form
    654,407.80/981,611.70 = 496,943.80/x
  3. Step 3: Cross multiply
    654,407.80x = 981,611.70 × 496,943.80
  4. Step 4: Simplify right side
    654,407.80x = 487,805,848,322.46
  5. Step 5: Solve for x
    x = 487,805,848,322.46/654,407.80
  6. Step 6: Final answer
    x = 745,415.70

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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.