Home / 1,319,762.60-1,979,708.70-689,906.60

Finding the Fourth Proportional to 1,319,762.60, 1,979,708.70 and 689,906.60

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Solution

The fourth proportional to 1,319,762.60, 1,979,708.70 and 689,906.60 is: 1,034,893.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,762.60 : 1,979,708.70 = 689,906.60 : x
  2. Step 2: Convert to fraction form
    1,319,762.60/1,979,708.70 = 689,906.60/x
  3. Step 3: Cross multiply
    1,319,762.60x = 1,979,708.70 × 689,906.60
  4. Step 4: Simplify right side
    1,319,762.60x = 1,365,814,098,207.42
  5. Step 5: Solve for x
    x = 1,365,814,098,207.42/1,319,762.60
  6. Step 6: Final answer
    x = 1,034,893.77

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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.