Home / 1,487,815.20-2,231,722.80-890,618.40

Finding the Fourth Proportional to 1,487,815.20, 2,231,722.80 and 890,618.40

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Solution

The fourth proportional to 1,487,815.20, 2,231,722.80 and 890,618.40 is: 1,335,927.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,487,815.20 : 2,231,722.80 = 890,618.40 : x
  2. Step 2: Convert to fraction form
    1,487,815.20/2,231,722.80 = 890,618.40/x
  3. Step 3: Cross multiply
    1,487,815.20x = 2,231,722.80 × 890,618.40
  4. Step 4: Simplify right side
    1,487,815.20x = 1,987,613,389,379.52
  5. Step 5: Solve for x
    x = 1,987,613,389,379.52/1,487,815.20
  6. Step 6: Final answer
    x = 1,335,927.60

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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.