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Finding the Fourth Proportional to 722,808.44, 997,497.51 and 400,488.38

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Solution

The fourth proportional to 722,808.44, 997,497.51 and 400,488.38 is: 552,686.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,808.44 : 997,497.51 = 400,488.38 : x
  2. Step 2: Convert to fraction form
    722,808.44/997,497.51 = 400,488.38/x
  3. Step 3: Cross multiply
    722,808.44x = 997,497.51 × 400,488.38
  4. Step 4: Simplify right side
    722,808.44x = 399,486,161,833.93
  5. Step 5: Solve for x
    x = 399,486,161,833.93/722,808.44
  6. Step 6: Final answer
    x = 552,686.08

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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.