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Finding the Fourth Proportional to 694,347.12, 958,153.76 and 388,370.48

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Solution

The fourth proportional to 694,347.12, 958,153.76 and 388,370.48 is: 535,925.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,347.12 : 958,153.76 = 388,370.48 : x
  2. Step 2: Convert to fraction form
    694,347.12/958,153.76 = 388,370.48/x
  3. Step 3: Cross multiply
    694,347.12x = 958,153.76 × 388,370.48
  4. Step 4: Simplify right side
    694,347.12x = 372,118,635,685.01
  5. Step 5: Solve for x
    x = 372,118,635,685.01/694,347.12
  6. Step 6: Final answer
    x = 535,925.94

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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.