Home / 1,079,208.34-1,489,355.70-620,471.72

Finding the Fourth Proportional to 1,079,208.34, 1,489,355.70 and 620,471.72

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Solution

The fourth proportional to 1,079,208.34, 1,489,355.70 and 620,471.72 is: 856,278.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,079,208.34 : 1,489,355.70 = 620,471.72 : x
  2. Step 2: Convert to fraction form
    1,079,208.34/1,489,355.70 = 620,471.72/x
  3. Step 3: Cross multiply
    1,079,208.34x = 1,489,355.70 × 620,471.72
  4. Step 4: Simplify right side
    1,079,208.34x = 924,103,092,870.80
  5. Step 5: Solve for x
    x = 924,103,092,870.80/1,079,208.34
  6. Step 6: Final answer
    x = 856,278.68

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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.