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Finding the Fourth Proportional to 722,570.88, 997,145.28 and 404,618.88

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Solution

The fourth proportional to 722,570.88, 997,145.28 and 404,618.88 is: 558,372.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,570.88 : 997,145.28 = 404,618.88 : x
  2. Step 2: Convert to fraction form
    722,570.88/997,145.28 = 404,618.88/x
  3. Step 3: Cross multiply
    722,570.88x = 997,145.28 × 404,618.88
  4. Step 4: Simplify right side
    722,570.88x = 403,463,806,390.89
  5. Step 5: Solve for x
    x = 403,463,806,390.89/722,570.88
  6. Step 6: Final answer
    x = 558,372.64

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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.