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Finding the Fourth Proportional to 652,068.70, 978,679.05 and 385,495.90

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Solution

The fourth proportional to 652,068.70, 978,679.05 and 385,495.90 is: 578,584.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,068.70 : 978,679.05 = 385,495.90 : x
  2. Step 2: Convert to fraction form
    652,068.70/978,679.05 = 385,495.90/x
  3. Step 3: Cross multiply
    652,068.70x = 978,679.05 × 385,495.90
  4. Step 4: Simplify right side
    652,068.70x = 377,276,761,190.90
  5. Step 5: Solve for x
    x = 377,276,761,190.90/652,068.70
  6. Step 6: Final answer
    x = 578,584.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.