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Finding the Fourth Proportional to 938,068, 1,408,991.36 and 559,728.16

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Solution

The fourth proportional to 938,068, 1,408,991.36 and 559,728.16 is: 840,719.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    938,068 : 1,408,991.36 = 559,728.16 : x
  2. Step 2: Convert to fraction form
    938,068/1,408,991.36 = 559,728.16/x
  3. Step 3: Cross multiply
    938,068x = 1,408,991.36 × 559,728.16
  4. Step 4: Simplify right side
    938,068x = 788,652,141,388.70
  5. Step 5: Solve for x
    x = 788,652,141,388.70/938,068
  6. Step 6: Final answer
    x = 840,719.59

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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.