Home / 778,103.40-1,073,869.58-456,085.86

Finding the Fourth Proportional to 778,103.40, 1,073,869.58 and 456,085.86

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Solution

The fourth proportional to 778,103.40, 1,073,869.58 and 456,085.86 is: 629,449.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,103.40 : 1,073,869.58 = 456,085.86 : x
  2. Step 2: Convert to fraction form
    778,103.40/1,073,869.58 = 456,085.86/x
  3. Step 3: Cross multiply
    778,103.40x = 1,073,869.58 × 456,085.86
  4. Step 4: Simplify right side
    778,103.40x = 489,776,730,922.14
  5. Step 5: Solve for x
    x = 489,776,730,922.14/778,103.40
  6. Step 6: Final answer
    x = 629,449.42

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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.