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Finding the Fourth Proportional to 722,846.28, 997,533.81 and 400,561.76

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Solution

The fourth proportional to 722,846.28, 997,533.81 and 400,561.76 is: 552,778.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,846.28 : 997,533.81 = 400,561.76 : x
  2. Step 2: Convert to fraction form
    722,846.28/997,533.81 = 400,561.76/x
  3. Step 3: Cross multiply
    722,846.28x = 997,533.81 × 400,561.76
  4. Step 4: Simplify right side
    722,846.28x = 399,573,895,097.87
  5. Step 5: Solve for x
    x = 399,573,895,097.87/722,846.28
  6. Step 6: Final answer
    x = 552,778.52

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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.