Home / 1,319,727.60-1,979,656.20-689,871.60

Finding the Fourth Proportional to 1,319,727.60, 1,979,656.20 and 689,871.60

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Solution

The fourth proportional to 1,319,727.60, 1,979,656.20 and 689,871.60 is: 1,034,841.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,727.60 : 1,979,656.20 = 689,871.60 : x
  2. Step 2: Convert to fraction form
    1,319,727.60/1,979,656.20 = 689,871.60/x
  3. Step 3: Cross multiply
    1,319,727.60x = 1,979,656.20 × 689,871.60
  4. Step 4: Simplify right side
    1,319,727.60x = 1,365,708,590,143.92
  5. Step 5: Solve for x
    x = 1,365,708,590,143.92/1,319,727.60
  6. Step 6: Final answer
    x = 1,034,841.27

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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.