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Finding the Fourth Proportional to 978,004.19, 1,349,644.83 and 548,284.43

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Solution

The fourth proportional to 978,004.19, 1,349,644.83 and 548,284.43 is: 756,631.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,004.19 : 1,349,644.83 = 548,284.43 : x
  2. Step 2: Convert to fraction form
    978,004.19/1,349,644.83 = 548,284.43/x
  3. Step 3: Cross multiply
    978,004.19x = 1,349,644.83 × 548,284.43
  4. Step 4: Simplify right side
    978,004.19x = 739,989,246,319.00
  5. Step 5: Solve for x
    x = 739,989,246,319.00/978,004.19
  6. Step 6: Final answer
    x = 756,631.98

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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.