Home / 1,399,626.37-1,931,545.88-787,818.66

Finding the Fourth Proportional to 1,399,626.37, 1,931,545.88 and 787,818.66

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Solution

The fourth proportional to 1,399,626.37, 1,931,545.88 and 787,818.66 is: 1,087,224.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,399,626.37 : 1,931,545.88 = 787,818.66 : x
  2. Step 2: Convert to fraction form
    1,399,626.37/1,931,545.88 = 787,818.66/x
  3. Step 3: Cross multiply
    1,399,626.37x = 1,931,545.88 × 787,818.66
  4. Step 4: Simplify right side
    1,399,626.37x = 1,521,707,886,910.12
  5. Step 5: Solve for x
    x = 1,521,707,886,910.12/1,399,626.37
  6. Step 6: Final answer
    x = 1,087,224.36

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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.