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Finding the Fourth Proportional to 722,960.22, 997,685.06 and 400,718.72

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Solution

The fourth proportional to 722,960.22, 997,685.06 and 400,718.72 is: 552,991.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,960.22 : 997,685.06 = 400,718.72 : x
  2. Step 2: Convert to fraction form
    722,960.22/997,685.06 = 400,718.72/x
  3. Step 3: Cross multiply
    722,960.22x = 997,685.06 × 400,718.72
  4. Step 4: Simplify right side
    722,960.22x = 399,791,080,206.32
  5. Step 5: Solve for x
    x = 399,791,080,206.32/722,960.22
  6. Step 6: Final answer
    x = 552,991.81

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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.