Home / 1,186,921.62-1,637,952.03-643,061.16

Finding the Fourth Proportional to 1,186,921.62, 1,637,952.03 and 643,061.16

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Solution

The fourth proportional to 1,186,921.62, 1,637,952.03 and 643,061.16 is: 887,424.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,921.62 : 1,637,952.03 = 643,061.16 : x
  2. Step 2: Convert to fraction form
    1,186,921.62/1,637,952.03 = 643,061.16/x
  3. Step 3: Cross multiply
    1,186,921.62x = 1,637,952.03 × 643,061.16
  4. Step 4: Simplify right side
    1,186,921.62x = 1,053,303,332,436.15
  5. Step 5: Solve for x
    x = 1,053,303,332,436.15/1,186,921.62
  6. Step 6: Final answer
    x = 887,424.51

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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.