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Finding the Fourth Proportional to 978,897.07, 1,350,857.29 and 543,289.05

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Solution

The fourth proportional to 978,897.07, 1,350,857.29 and 543,289.05 is: 749,727.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,897.07 : 1,350,857.29 = 543,289.05 : x
  2. Step 2: Convert to fraction form
    978,897.07/1,350,857.29 = 543,289.05/x
  3. Step 3: Cross multiply
    978,897.07x = 1,350,857.29 × 543,289.05
  4. Step 4: Simplify right side
    978,897.07x = 733,905,973,769.68
  5. Step 5: Solve for x
    x = 733,905,973,769.68/978,897.07
  6. Step 6: Final answer
    x = 749,727.42

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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.