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Finding the Fourth Proportional to 671,339.70, 926,421.48 and 384,660.42

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Solution

The fourth proportional to 671,339.70, 926,421.48 and 384,660.42 is: 530,815.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,339.70 : 926,421.48 = 384,660.42 : x
  2. Step 2: Convert to fraction form
    671,339.70/926,421.48 = 384,660.42/x
  3. Step 3: Cross multiply
    671,339.70x = 926,421.48 × 384,660.42
  4. Step 4: Simplify right side
    671,339.70x = 356,357,675,593.82
  5. Step 5: Solve for x
    x = 356,357,675,593.82/671,339.70
  6. Step 6: Final answer
    x = 530,815.73

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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.