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Finding the Fourth Proportional to 978,755.70, 1,468,133.55 and 624,461.70

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Solution

The fourth proportional to 978,755.70, 1,468,133.55 and 624,461.70 is: 936,692.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,755.70 : 1,468,133.55 = 624,461.70 : x
  2. Step 2: Convert to fraction form
    978,755.70/1,468,133.55 = 624,461.70/x
  3. Step 3: Cross multiply
    978,755.70x = 1,468,133.55 × 624,461.70
  4. Step 4: Simplify right side
    978,755.70x = 916,793,172,460.04
  5. Step 5: Solve for x
    x = 916,793,172,460.04/978,755.70
  6. Step 6: Final answer
    x = 936,692.55

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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.