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Finding the Fourth Proportional to 1,946,336.80, 2,919,505.20 and 684,000.40

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Solution

The fourth proportional to 1,946,336.80, 2,919,505.20 and 684,000.40 is: 1,026,000.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,946,336.80 : 2,919,505.20 = 684,000.40 : x
  2. Step 2: Convert to fraction form
    1,946,336.80/2,919,505.20 = 684,000.40/x
  3. Step 3: Cross multiply
    1,946,336.80x = 2,919,505.20 × 684,000.40
  4. Step 4: Simplify right side
    1,946,336.80x = 1,996,942,724,602.08
  5. Step 5: Solve for x
    x = 1,996,942,724,602.08/1,946,336.80
  6. Step 6: Final answer
    x = 1,026,000.60

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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.