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Finding the Fourth Proportional to 722,551.56, 997,108.12 and 400,260.68

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Solution

The fourth proportional to 722,551.56, 997,108.12 and 400,260.68 is: 552,352.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,551.56 : 997,108.12 = 400,260.68 : x
  2. Step 2: Convert to fraction form
    722,551.56/997,108.12 = 400,260.68/x
  3. Step 3: Cross multiply
    722,551.56x = 997,108.12 × 400,260.68
  4. Step 4: Simplify right side
    722,551.56x = 399,103,174,144.72
  5. Step 5: Solve for x
    x = 399,103,174,144.72/722,551.56
  6. Step 6: Final answer
    x = 552,352.52

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Double scale
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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.