Home / 778,103.64-1,074,050.91-455,918.04

Finding the Fourth Proportional to 778,103.64, 1,074,050.91 and 455,918.04

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Solution

The fourth proportional to 778,103.64, 1,074,050.91 and 455,918.04 is: 629,323.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,103.64 : 1,074,050.91 = 455,918.04 : x
  2. Step 2: Convert to fraction form
    778,103.64/1,074,050.91 = 455,918.04/x
  3. Step 3: Cross multiply
    778,103.64x = 1,074,050.91 × 455,918.04
  4. Step 4: Simplify right side
    778,103.64x = 489,679,185,747.42
  5. Step 5: Solve for x
    x = 489,679,185,747.42/778,103.64
  6. Step 6: Final answer
    x = 629,323.86

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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.