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Finding the Fourth Proportional to 994,590.90, 1,490,902.20 and 488,737.80

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Solution

The fourth proportional to 994,590.90, 1,490,902.20 and 488,737.80 is: 732,623.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    994,590.90 : 1,490,902.20 = 488,737.80 : x
  2. Step 2: Convert to fraction form
    994,590.90/1,490,902.20 = 488,737.80/x
  3. Step 3: Cross multiply
    994,590.90x = 1,490,902.20 × 488,737.80
  4. Step 4: Simplify right side
    994,590.90x = 728,660,261,243.16
  5. Step 5: Solve for x
    x = 728,660,261,243.16/994,590.90
  6. Step 6: Final answer
    x = 732,623.09

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1.5x scale

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.