Home / 1,186,905.85-1,637,927.85-643,055.15

Finding the Fourth Proportional to 1,186,905.85, 1,637,927.85 and 643,055.15

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Solution

The fourth proportional to 1,186,905.85, 1,637,927.85 and 643,055.15 is: 887,414.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,905.85 : 1,637,927.85 = 643,055.15 : x
  2. Step 2: Convert to fraction form
    1,186,905.85/1,637,927.85 = 643,055.15/x
  3. Step 3: Cross multiply
    1,186,905.85x = 1,637,927.85 × 643,055.15
  4. Step 4: Simplify right side
    1,186,905.85x = 1,053,277,939,270.93
  5. Step 5: Solve for x
    x = 1,053,277,939,270.93/1,186,905.85
  6. Step 6: Final answer
    x = 887,414.91

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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.