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Finding the Fourth Proportional to 688,019.88, 949,491.48 and 382,101.36

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Solution

The fourth proportional to 688,019.88, 949,491.48 and 382,101.36 is: 527,313.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,019.88 : 949,491.48 = 382,101.36 : x
  2. Step 2: Convert to fraction form
    688,019.88/949,491.48 = 382,101.36/x
  3. Step 3: Cross multiply
    688,019.88x = 949,491.48 × 382,101.36
  4. Step 4: Simplify right side
    688,019.88x = 362,801,985,816.41
  5. Step 5: Solve for x
    x = 362,801,985,816.41/688,019.88
  6. Step 6: Final answer
    x = 527,313.23

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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.