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Finding the Fourth Proportional to 978,052.19, 1,348,471.73 and 698,982.89

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Solution

The fourth proportional to 978,052.19, 1,348,471.73 and 698,982.89 is: 963,709.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,052.19 : 1,348,471.73 = 698,982.89 : x
  2. Step 2: Convert to fraction form
    978,052.19/1,348,471.73 = 698,982.89/x
  3. Step 3: Cross multiply
    978,052.19x = 1,348,471.73 × 698,982.89
  4. Step 4: Simplify right side
    978,052.19x = 942,558,661,923.80
  5. Step 5: Solve for x
    x = 942,558,661,923.80/978,052.19
  6. Step 6: Final answer
    x = 963,709.99

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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.