Home / 729,008.78-1,006,032.75-406,718.93

Finding the Fourth Proportional to 729,008.78, 1,006,032.75 and 406,718.93

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Solution

The fourth proportional to 729,008.78, 1,006,032.75 and 406,718.93 is: 561,272.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,008.78 : 1,006,032.75 = 406,718.93 : x
  2. Step 2: Convert to fraction form
    729,008.78/1,006,032.75 = 406,718.93/x
  3. Step 3: Cross multiply
    729,008.78x = 1,006,032.75 × 406,718.93
  4. Step 4: Simplify right side
    729,008.78x = 409,172,563,624.96
  5. Step 5: Solve for x
    x = 409,172,563,624.96/729,008.78
  6. Step 6: Final answer
    x = 561,272.48

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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.