Home / 1,186,906.10-1,637,928.20-643,055.40

Finding the Fourth Proportional to 1,186,906.10, 1,637,928.20 and 643,055.40

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Solution

The fourth proportional to 1,186,906.10, 1,637,928.20 and 643,055.40 is: 887,415.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,906.10 : 1,637,928.20 = 643,055.40 : x
  2. Step 2: Convert to fraction form
    1,186,906.10/1,637,928.20 = 643,055.40/x
  3. Step 3: Cross multiply
    1,186,906.10x = 1,637,928.20 × 643,055.40
  4. Step 4: Simplify right side
    1,186,906.10x = 1,053,278,570,607.00
  5. Step 5: Solve for x
    x = 1,053,278,570,607.00/1,186,906.10
  6. Step 6: Final answer
    x = 887,415.25

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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.