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Finding the Fourth Proportional to 988,578.60, 1,482,940.80 and 357,410.40

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Solution

The fourth proportional to 988,578.60, 1,482,940.80 and 357,410.40 is: 536,141.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    988,578.60 : 1,482,940.80 = 357,410.40 : x
  2. Step 2: Convert to fraction form
    988,578.60/1,482,940.80 = 357,410.40/x
  3. Step 3: Cross multiply
    988,578.60x = 1,482,940.80 × 357,410.40
  4. Step 4: Simplify right side
    988,578.60x = 530,018,464,504.32
  5. Step 5: Solve for x
    x = 530,018,464,504.32/988,578.60
  6. Step 6: Final answer
    x = 536,141.96

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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.