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Finding the Fourth Proportional to 558,392.88, 837,682.74 and 438,445

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Solution

The fourth proportional to 558,392.88, 837,682.74 and 438,445 is: 657,740.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,392.88 : 837,682.74 = 438,445 : x
  2. Step 2: Convert to fraction form
    558,392.88/837,682.74 = 438,445/x
  3. Step 3: Cross multiply
    558,392.88x = 837,682.74 × 438,445
  4. Step 4: Simplify right side
    558,392.88x = 367,277,808,939.30
  5. Step 5: Solve for x
    x = 367,277,808,939.30/558,392.88
  6. Step 6: Final answer
    x = 657,740.85

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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.