Home / 828,004.20-1,242,006.30-678,413.40

Finding the Fourth Proportional to 828,004.20, 1,242,006.30 and 678,413.40

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Solution

The fourth proportional to 828,004.20, 1,242,006.30 and 678,413.40 is: 1,017,620.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,004.20 : 1,242,006.30 = 678,413.40 : x
  2. Step 2: Convert to fraction form
    828,004.20/1,242,006.30 = 678,413.40/x
  3. Step 3: Cross multiply
    828,004.20x = 1,242,006.30 × 678,413.40
  4. Step 4: Simplify right side
    828,004.20x = 842,593,716,804.42
  5. Step 5: Solve for x
    x = 842,593,716,804.42/828,004.20
  6. Step 6: Final answer
    x = 1,017,620.10

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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.