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Finding the Fourth Proportional to 722,885.70, 997,587.82 and 400,601

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Solution

The fourth proportional to 722,885.70, 997,587.82 and 400,601 is: 552,832.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,885.70 : 997,587.82 = 400,601 : x
  2. Step 2: Convert to fraction form
    722,885.70/997,587.82 = 400,601/x
  3. Step 3: Cross multiply
    722,885.70x = 997,587.82 × 400,601
  4. Step 4: Simplify right side
    722,885.70x = 399,634,678,279.82
  5. Step 5: Solve for x
    x = 399,634,678,279.82/722,885.70
  6. Step 6: Final answer
    x = 552,832.46

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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.