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Finding the Fourth Proportional to 670,874.05, 925,830.36 and 384,449.49

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Solution

The fourth proportional to 670,874.05, 925,830.36 and 384,449.49 is: 530,554.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,874.05 : 925,830.36 = 384,449.49 : x
  2. Step 2: Convert to fraction form
    670,874.05/925,830.36 = 384,449.49/x
  3. Step 3: Cross multiply
    670,874.05x = 925,830.36 × 384,449.49
  4. Step 4: Simplify right side
    670,874.05x = 355,935,009,728.52
  5. Step 5: Solve for x
    x = 355,935,009,728.52/670,874.05
  6. Step 6: Final answer
    x = 530,554.15

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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.