Home / 1,186,681.20-1,637,627.84-642,816.96

Finding the Fourth Proportional to 1,186,681.20, 1,637,627.84 and 642,816.96

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Solution

The fourth proportional to 1,186,681.20, 1,637,627.84 and 642,816.96 is: 887,091.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,681.20 : 1,637,627.84 = 642,816.96 : x
  2. Step 2: Convert to fraction form
    1,186,681.20/1,637,627.84 = 642,816.96/x
  3. Step 3: Cross multiply
    1,186,681.20x = 1,637,627.84 × 642,816.96
  4. Step 4: Simplify right side
    1,186,681.20x = 1,052,694,949,720.17
  5. Step 5: Solve for x
    x = 1,052,694,949,720.17/1,186,681.20
  6. Step 6: Final answer
    x = 887,091.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.