Home / 1,117,817.80-1,677,839.10-518,914.60

Finding the Fourth Proportional to 1,117,817.80, 1,677,839.10 and 518,914.60

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Solution

The fourth proportional to 1,117,817.80, 1,677,839.10 and 518,914.60 is: 778,888.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,117,817.80 : 1,677,839.10 = 518,914.60 : x
  2. Step 2: Convert to fraction form
    1,117,817.80/1,677,839.10 = 518,914.60/x
  3. Step 3: Cross multiply
    1,117,817.80x = 1,677,839.10 × 518,914.60
  4. Step 4: Simplify right side
    1,117,817.80x = 870,655,205,440.86
  5. Step 5: Solve for x
    x = 870,655,205,440.86/1,117,817.80
  6. Step 6: Final answer
    x = 778,888.30

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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.