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Finding the Fourth Proportional to 722,855.17, 997,546.04 and 400,570.65

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Solution

The fourth proportional to 722,855.17, 997,546.04 and 400,570.65 is: 552,790.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,855.17 : 997,546.04 = 400,570.65 : x
  2. Step 2: Convert to fraction form
    722,855.17/997,546.04 = 400,570.65/x
  3. Step 3: Cross multiply
    722,855.17x = 997,546.04 × 400,570.65
  4. Step 4: Simplify right side
    722,855.17x = 399,587,662,341.42
  5. Step 5: Solve for x
    x = 399,587,662,341.42/722,855.17
  6. Step 6: Final answer
    x = 552,790.77

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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.