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Finding the Fourth Proportional to 994,698.60, 1,490,298.30 and 816,239.40

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Solution

The fourth proportional to 994,698.60, 1,490,298.30 and 816,239.40 is: 1,222,923.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    994,698.60 : 1,490,298.30 = 816,239.40 : x
  2. Step 2: Convert to fraction form
    994,698.60/1,490,298.30 = 816,239.40/x
  3. Step 3: Cross multiply
    994,698.60x = 1,490,298.30 × 816,239.40
  4. Step 4: Simplify right side
    994,698.60x = 1,216,440,190,213.02
  5. Step 5: Solve for x
    x = 1,216,440,190,213.02/994,698.60
  6. Step 6: Final answer
    x = 1,222,923.40

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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.