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Finding the Fourth Proportional to 988,007.60, 1,482,702.60 and 427,444.40

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Solution

The fourth proportional to 988,007.60, 1,482,702.60 and 427,444.40 is: 641,465.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    988,007.60 : 1,482,702.60 = 427,444.40 : x
  2. Step 2: Convert to fraction form
    988,007.60/1,482,702.60 = 427,444.40/x
  3. Step 3: Cross multiply
    988,007.60x = 1,482,702.60 × 427,444.40
  4. Step 4: Simplify right side
    988,007.60x = 633,772,923,235.44
  5. Step 5: Solve for x
    x = 633,772,923,235.44/988,007.60
  6. Step 6: Final answer
    x = 641,465.64

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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.