Home / 719,929.82-993,497.22-393,243.05

Finding the Fourth Proportional to 719,929.82, 993,497.22 and 393,243.05

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Solution

The fourth proportional to 719,929.82, 993,497.22 and 393,243.05 is: 542,672.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,929.82 : 993,497.22 = 393,243.05 : x
  2. Step 2: Convert to fraction form
    719,929.82/993,497.22 = 393,243.05/x
  3. Step 3: Cross multiply
    719,929.82x = 993,497.22 × 393,243.05
  4. Step 4: Simplify right side
    719,929.82x = 390,685,871,991.84
  5. Step 5: Solve for x
    x = 390,685,871,991.84/719,929.82
  6. Step 6: Final answer
    x = 542,672.17

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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.