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Finding the Fourth Proportional to 978,914.07, 1,350,880.74 and 543,306.06

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Solution

The fourth proportional to 978,914.07, 1,350,880.74 and 543,306.06 is: 749,750.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,914.07 : 1,350,880.74 = 543,306.06 : x
  2. Step 2: Convert to fraction form
    978,914.07/1,350,880.74 = 543,306.06/x
  3. Step 3: Cross multiply
    978,914.07x = 1,350,880.74 × 543,306.06
  4. Step 4: Simplify right side
    978,914.07x = 733,941,692,379.28
  5. Step 5: Solve for x
    x = 733,941,692,379.28/978,914.07
  6. Step 6: Final answer
    x = 749,750.89

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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.