Home / 729,007.78-1,006,031.37-406,717.93

Finding the Fourth Proportional to 729,007.78, 1,006,031.37 and 406,717.93

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Solution

The fourth proportional to 729,007.78, 1,006,031.37 and 406,717.93 is: 561,271.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,007.78 : 1,006,031.37 = 406,717.93 : x
  2. Step 2: Convert to fraction form
    729,007.78/1,006,031.37 = 406,717.93/x
  3. Step 3: Cross multiply
    729,007.78x = 1,006,031.37 × 406,717.93
  4. Step 4: Simplify right side
    729,007.78x = 409,170,996,321.46
  5. Step 5: Solve for x
    x = 409,170,996,321.46/729,007.78
  6. Step 6: Final answer
    x = 561,271.10

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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.