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Finding the Fourth Proportional to 778,817.39, 1,074,782 and 456,759.77

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Solution

The fourth proportional to 778,817.39, 1,074,782 and 456,759.77 is: 630,336.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,817.39 : 1,074,782 = 456,759.77 : x
  2. Step 2: Convert to fraction form
    778,817.39/1,074,782 = 456,759.77/x
  3. Step 3: Cross multiply
    778,817.39x = 1,074,782 × 456,759.77
  4. Step 4: Simplify right side
    778,817.39x = 490,917,179,120.14
  5. Step 5: Solve for x
    x = 490,917,179,120.14/778,817.39
  6. Step 6: Final answer
    x = 630,336.69

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1.5x scale

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.