Home / 878,716.80-1,317,686.40-405,158.40

Finding the Fourth Proportional to 878,716.80, 1,317,686.40 and 405,158.40

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Solution

The fourth proportional to 878,716.80, 1,317,686.40 and 405,158.40 is: 607,558.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,716.80 : 1,317,686.40 = 405,158.40 : x
  2. Step 2: Convert to fraction form
    878,716.80/1,317,686.40 = 405,158.40/x
  3. Step 3: Cross multiply
    878,716.80x = 1,317,686.40 × 405,158.40
  4. Step 4: Simplify right side
    878,716.80x = 533,871,713,525.76
  5. Step 5: Solve for x
    x = 533,871,713,525.76/878,716.80
  6. Step 6: Final answer
    x = 607,558.33

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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.