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Finding the Fourth Proportional to 1,316,343, 1,816,553.34 and 712,731

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Solution

The fourth proportional to 1,316,343, 1,816,553.34 and 712,731 is: 983,568.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,316,343 : 1,816,553.34 = 712,731 : x
  2. Step 2: Convert to fraction form
    1,316,343/1,816,553.34 = 712,731/x
  3. Step 3: Cross multiply
    1,316,343x = 1,816,553.34 × 712,731
  4. Step 4: Simplify right side
    1,316,343x = 1,294,713,878,571.54
  5. Step 5: Solve for x
    x = 1,294,713,878,571.54/1,316,343
  6. Step 6: Final answer
    x = 983,568.78

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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.