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Finding the Fourth Proportional to 554,418.60, 831,627.90 and 498,431.40

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Solution

The fourth proportional to 554,418.60, 831,627.90 and 498,431.40 is: 747,647.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,418.60 : 831,627.90 = 498,431.40 : x
  2. Step 2: Convert to fraction form
    554,418.60/831,627.90 = 498,431.40/x
  3. Step 3: Cross multiply
    554,418.60x = 831,627.90 × 498,431.40
  4. Step 4: Simplify right side
    554,418.60x = 414,509,458,476.06
  5. Step 5: Solve for x
    x = 414,509,458,476.06/554,418.60
  6. Step 6: Final answer
    x = 747,647.10

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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.