Home / 1,103,000.54-1,521,904.59-643,906.76

Finding the Fourth Proportional to 1,103,000.54, 1,521,904.59 and 643,906.76

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Solution

The fourth proportional to 1,103,000.54, 1,521,904.59 and 643,906.76 is: 888,453.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,103,000.54 : 1,521,904.59 = 643,906.76 : x
  2. Step 2: Convert to fraction form
    1,103,000.54/1,521,904.59 = 643,906.76/x
  3. Step 3: Cross multiply
    1,103,000.54x = 1,521,904.59 × 643,906.76
  4. Step 4: Simplify right side
    1,103,000.54x = 979,964,645,966.51
  5. Step 5: Solve for x
    x = 979,964,645,966.51/1,103,000.54
  6. Step 6: Final answer
    x = 888,453.46

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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.