Home / 1,117,811.80-1,677,830.10-518,908.60

Finding the Fourth Proportional to 1,117,811.80, 1,677,830.10 and 518,908.60

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Solution

The fourth proportional to 1,117,811.80, 1,677,830.10 and 518,908.60 is: 778,879.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,117,811.80 : 1,677,830.10 = 518,908.60 : x
  2. Step 2: Convert to fraction form
    1,117,811.80/1,677,830.10 = 518,908.60/x
  3. Step 3: Cross multiply
    1,117,811.80x = 1,677,830.10 × 518,908.60
  4. Step 4: Simplify right side
    1,117,811.80x = 870,640,468,228.86
  5. Step 5: Solve for x
    x = 870,640,468,228.86/1,117,811.80
  6. Step 6: Final answer
    x = 778,879.30

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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.