Home / 1,079,780.60-1,490,109.06-621,122.96

Finding the Fourth Proportional to 1,079,780.60, 1,490,109.06 and 621,122.96

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Solution

The fourth proportional to 1,079,780.60, 1,490,109.06 and 621,122.96 is: 857,156.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,079,780.60 : 1,490,109.06 = 621,122.96 : x
  2. Step 2: Convert to fraction form
    1,079,780.60/1,490,109.06 = 621,122.96/x
  3. Step 3: Cross multiply
    1,079,780.60x = 1,490,109.06 × 621,122.96
  4. Step 4: Simplify right side
    1,079,780.60x = 925,540,950,070.02
  5. Step 5: Solve for x
    x = 925,540,950,070.02/1,079,780.60
  6. Step 6: Final answer
    x = 857,156.49

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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.