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Finding the Fourth Proportional to 667,285.39, 920,920.08 and 380,848.74

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Solution

The fourth proportional to 667,285.39, 920,920.08 and 380,848.74 is: 525,609.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,285.39 : 920,920.08 = 380,848.74 : x
  2. Step 2: Convert to fraction form
    667,285.39/920,920.08 = 380,848.74/x
  3. Step 3: Cross multiply
    667,285.39x = 920,920.08 × 380,848.74
  4. Step 4: Simplify right side
    667,285.39x = 350,731,252,108.70
  5. Step 5: Solve for x
    x = 350,731,252,108.70/667,285.39
  6. Step 6: Final answer
    x = 525,609.07

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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.