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Finding the Fourth Proportional to 558,389.88, 837,678.24 and 438,442

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Solution

The fourth proportional to 558,389.88, 837,678.24 and 438,442 is: 657,736.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,389.88 : 837,678.24 = 438,442 : x
  2. Step 2: Convert to fraction form
    558,389.88/837,678.24 = 438,442/x
  3. Step 3: Cross multiply
    558,389.88x = 837,678.24 × 438,442
  4. Step 4: Simplify right side
    558,389.88x = 367,273,322,902.08
  5. Step 5: Solve for x
    x = 367,273,322,902.08/558,389.88
  6. Step 6: Final answer
    x = 657,736.35

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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.