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Finding the Fourth Proportional to 702,381.87, 969,330.87 and 396,510.07

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Solution

The fourth proportional to 702,381.87, 969,330.87 and 396,510.07 is: 547,208.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,381.87 : 969,330.87 = 396,510.07 : x
  2. Step 2: Convert to fraction form
    702,381.87/969,330.87 = 396,510.07/x
  3. Step 3: Cross multiply
    702,381.87x = 969,330.87 × 396,510.07
  4. Step 4: Simplify right side
    702,381.87x = 384,349,449,134.31
  5. Step 5: Solve for x
    x = 384,349,449,134.31/702,381.87
  6. Step 6: Final answer
    x = 547,208.67

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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.