Home / 778,156.96-1,073,939.28-456,137.68

Finding the Fourth Proportional to 778,156.96, 1,073,939.28 and 456,137.68

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Solution

The fourth proportional to 778,156.96, 1,073,939.28 and 456,137.68 is: 629,518.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,156.96 : 1,073,939.28 = 456,137.68 : x
  2. Step 2: Convert to fraction form
    778,156.96/1,073,939.28 = 456,137.68/x
  3. Step 3: Cross multiply
    778,156.96x = 1,073,939.28 × 456,137.68
  4. Step 4: Simplify right side
    778,156.96x = 489,864,171,640.07
  5. Step 5: Solve for x
    x = 489,864,171,640.07/778,156.96
  6. Step 6: Final answer
    x = 629,518.46

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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.