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Finding the Fourth Proportional to 679,322.88, 937,445.34 and 388,924.83

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Solution

The fourth proportional to 679,322.88, 937,445.34 and 388,924.83 is: 536,704.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,322.88 : 937,445.34 = 388,924.83 : x
  2. Step 2: Convert to fraction form
    679,322.88/937,445.34 = 388,924.83/x
  3. Step 3: Cross multiply
    679,322.88x = 937,445.34 × 388,924.83
  4. Step 4: Simplify right side
    679,322.88x = 364,595,769,493.79
  5. Step 5: Solve for x
    x = 364,595,769,493.79/679,322.88
  6. Step 6: Final answer
    x = 536,704.68

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1.5x scale

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.