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Finding the Fourth Proportional to 502,129.72, 692,972.94 and 275,777.56

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Solution

The fourth proportional to 502,129.72, 692,972.94 and 275,777.56 is: 380,591.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,129.72 : 692,972.94 = 275,777.56 : x
  2. Step 2: Convert to fraction form
    502,129.72/692,972.94 = 275,777.56/x
  3. Step 3: Cross multiply
    502,129.72x = 692,972.94 × 275,777.56
  4. Step 4: Simplify right side
    502,129.72x = 191,106,386,539.23
  5. Step 5: Solve for x
    x = 191,106,386,539.23/502,129.72
  6. Step 6: Final answer
    x = 380,591.67

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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.