Home / 1,187,594.35-1,638,836.29-643,718.46

Finding the Fourth Proportional to 1,187,594.35, 1,638,836.29 and 643,718.46

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Solution

The fourth proportional to 1,187,594.35, 1,638,836.29 and 643,718.46 is: 888,307.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,594.35 : 1,638,836.29 = 643,718.46 : x
  2. Step 2: Convert to fraction form
    1,187,594.35/1,638,836.29 = 643,718.46/x
  3. Step 3: Cross multiply
    1,187,594.35x = 1,638,836.29 × 643,718.46
  4. Step 4: Simplify right side
    1,187,594.35x = 1,054,949,172,790.91
  5. Step 5: Solve for x
    x = 1,054,949,172,790.91/1,187,594.35
  6. Step 6: Final answer
    x = 888,307.67

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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.