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Finding the Fourth Proportional to 670,863.54, 925,775 and 384,365.18

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Solution

The fourth proportional to 670,863.54, 925,775 and 384,365.18 is: 530,414.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,863.54 : 925,775 = 384,365.18 : x
  2. Step 2: Convert to fraction form
    670,863.54/925,775 = 384,365.18/x
  3. Step 3: Cross multiply
    670,863.54x = 925,775 × 384,365.18
  4. Step 4: Simplify right side
    670,863.54x = 355,835,674,514.50
  5. Step 5: Solve for x
    x = 355,835,674,514.50/670,863.54
  6. Step 6: Final answer
    x = 530,414.39

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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.