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Finding the Fourth Proportional to 506,677.44, 699,228 and 305,486.40

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Solution

The fourth proportional to 506,677.44, 699,228 and 305,486.40 is: 421,579.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,677.44 : 699,228 = 305,486.40 : x
  2. Step 2: Convert to fraction form
    506,677.44/699,228 = 305,486.40/x
  3. Step 3: Cross multiply
    506,677.44x = 699,228 × 305,486.40
  4. Step 4: Simplify right side
    506,677.44x = 213,604,644,499.20
  5. Step 5: Solve for x
    x = 213,604,644,499.20/506,677.44
  6. Step 6: Final answer
    x = 421,579.15

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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.