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Finding the Fourth Proportional to 702,178.56, 969,005.94 and 379,888.74

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Solution

The fourth proportional to 702,178.56, 969,005.94 and 379,888.74 is: 524,246.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,178.56 : 969,005.94 = 379,888.74 : x
  2. Step 2: Convert to fraction form
    702,178.56/969,005.94 = 379,888.74/x
  3. Step 3: Cross multiply
    702,178.56x = 969,005.94 × 379,888.74
  4. Step 4: Simplify right side
    702,178.56x = 368,114,445,599.12
  5. Step 5: Solve for x
    x = 368,114,445,599.12/702,178.56
  6. Step 6: Final answer
    x = 524,246.21

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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.