Home / 1,247,339.21-1,721,199.65-920,825.91

Finding the Fourth Proportional to 1,247,339.21, 1,721,199.65 and 920,825.91

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Solution

The fourth proportional to 1,247,339.21, 1,721,199.65 and 920,825.91 is: 1,270,644.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,339.21 : 1,721,199.65 = 920,825.91 : x
  2. Step 2: Convert to fraction form
    1,247,339.21/1,721,199.65 = 920,825.91/x
  3. Step 3: Cross multiply
    1,247,339.21x = 1,721,199.65 × 920,825.91
  4. Step 4: Simplify right side
    1,247,339.21x = 1,584,925,229,398.80
  5. Step 5: Solve for x
    x = 1,584,925,229,398.80/1,247,339.21
  6. Step 6: Final answer
    x = 1,270,644.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.