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Finding the Fourth Proportional to 722,897.78, 997,604.80 and 400,613.18

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Solution

The fourth proportional to 722,897.78, 997,604.80 and 400,613.18 is: 552,849.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,897.78 : 997,604.80 = 400,613.18 : x
  2. Step 2: Convert to fraction form
    722,897.78/997,604.80 = 400,613.18/x
  3. Step 3: Cross multiply
    722,897.78x = 997,604.80 × 400,613.18
  4. Step 4: Simplify right side
    722,897.78x = 399,653,625,321.71
  5. Step 5: Solve for x
    x = 399,653,625,321.71/722,897.78
  6. Step 6: Final answer
    x = 552,849.43

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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.