Home / 778,878.20-1,168,778.10-513,406.20

Finding the Fourth Proportional to 778,878.20, 1,168,778.10 and 513,406.20

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Solution

The fourth proportional to 778,878.20, 1,168,778.10 and 513,406.20 is: 770,413.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,878.20 : 1,168,778.10 = 513,406.20 : x
  2. Step 2: Convert to fraction form
    778,878.20/1,168,778.10 = 513,406.20/x
  3. Step 3: Cross multiply
    778,878.20x = 1,168,778.10 × 513,406.20
  4. Step 4: Simplify right side
    778,878.20x = 600,057,922,964.22
  5. Step 5: Solve for x
    x = 600,057,922,964.22/778,878.20
  6. Step 6: Final answer
    x = 770,413.04

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Double scale
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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.