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Finding the Fourth Proportional to 985,543.84, 1,480,806.84 and 945,685.72

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Solution

The fourth proportional to 985,543.84, 1,480,806.84 and 945,685.72 is: 1,420,918.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,543.84 : 1,480,806.84 = 945,685.72 : x
  2. Step 2: Convert to fraction form
    985,543.84/1,480,806.84 = 945,685.72/x
  3. Step 3: Cross multiply
    985,543.84x = 1,480,806.84 × 945,685.72
  4. Step 4: Simplify right side
    985,543.84x = 1,400,377,882,666.33
  5. Step 5: Solve for x
    x = 1,400,377,882,666.33/985,543.84
  6. Step 6: Final answer
    x = 1,420,918.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.