Home / 1,186,857.77-1,637,861.72-643,007.36

Finding the Fourth Proportional to 1,186,857.77, 1,637,861.72 and 643,007.36

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Solution

The fourth proportional to 1,186,857.77, 1,637,861.72 and 643,007.36 is: 887,349.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,857.77 : 1,637,861.72 = 643,007.36 : x
  2. Step 2: Convert to fraction form
    1,186,857.77/1,637,861.72 = 643,007.36/x
  3. Step 3: Cross multiply
    1,186,857.77x = 1,637,861.72 × 643,007.36
  4. Step 4: Simplify right side
    1,186,857.77x = 1,053,157,141,501.88
  5. Step 5: Solve for x
    x = 1,053,157,141,501.88/1,186,857.77
  6. Step 6: Final answer
    x = 887,349.08

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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.