Home / 1,008,726.31-1,392,000.42-549,830.78

Finding the Fourth Proportional to 1,008,726.31, 1,392,000.42 and 549,830.78

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Solution

The fourth proportional to 1,008,726.31, 1,392,000.42 and 549,830.78 is: 758,743.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,008,726.31 : 1,392,000.42 = 549,830.78 : x
  2. Step 2: Convert to fraction form
    1,008,726.31/1,392,000.42 = 549,830.78/x
  3. Step 3: Cross multiply
    1,008,726.31x = 1,392,000.42 × 549,830.78
  4. Step 4: Simplify right side
    1,008,726.31x = 765,364,684,840.80
  5. Step 5: Solve for x
    x = 765,364,684,840.80/1,008,726.31
  6. Step 6: Final answer
    x = 758,743.65

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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.