Home / 990,339.30-1,488,680.10-920,136.60

Finding the Fourth Proportional to 990,339.30, 1,488,680.10 and 920,136.60

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Solution

The fourth proportional to 990,339.30, 1,488,680.10 and 920,136.60 is: 1,383,151.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,339.30 : 1,488,680.10 = 920,136.60 : x
  2. Step 2: Convert to fraction form
    990,339.30/1,488,680.10 = 920,136.60/x
  3. Step 3: Cross multiply
    990,339.30x = 1,488,680.10 × 920,136.60
  4. Step 4: Simplify right side
    990,339.30x = 1,369,789,045,701.66
  5. Step 5: Solve for x
    x = 1,369,789,045,701.66/990,339.30
  6. Step 6: Final answer
    x = 1,383,151.26

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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.