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Finding the Fourth Proportional to 502,407.70, 693,314.79 and 276,048.34

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Solution

The fourth proportional to 502,407.70, 693,314.79 and 276,048.34 is: 380,942.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,407.70 : 693,314.79 = 276,048.34 : x
  2. Step 2: Convert to fraction form
    502,407.70/693,314.79 = 276,048.34/x
  3. Step 3: Cross multiply
    502,407.70x = 693,314.79 × 276,048.34
  4. Step 4: Simplify right side
    502,407.70x = 191,388,396,876.95
  5. Step 5: Solve for x
    x = 191,388,396,876.95/502,407.70
  6. Step 6: Final answer
    x = 380,942.40

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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.