Home / 778,774.71-1,168,156.80-419,114.82

Finding the Fourth Proportional to 778,774.71, 1,168,156.80 and 419,114.82

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Solution

The fourth proportional to 778,774.71, 1,168,156.80 and 419,114.82 is: 628,669.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,774.71 : 1,168,156.80 = 419,114.82 : x
  2. Step 2: Convert to fraction form
    778,774.71/1,168,156.80 = 419,114.82/x
  3. Step 3: Cross multiply
    778,774.71x = 1,168,156.80 × 419,114.82
  4. Step 4: Simplify right side
    778,774.71x = 489,591,826,963.78
  5. Step 5: Solve for x
    x = 489,591,826,963.78/778,774.71
  6. Step 6: Final answer
    x = 628,669.40

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1.5x scale

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.