Home / 1,428,413.94-1,971,205.67-783,844.90

Finding the Fourth Proportional to 1,428,413.94, 1,971,205.67 and 783,844.90

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Solution

The fourth proportional to 1,428,413.94, 1,971,205.67 and 783,844.90 is: 1,081,702.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,413.94 : 1,971,205.67 = 783,844.90 : x
  2. Step 2: Convert to fraction form
    1,428,413.94/1,971,205.67 = 783,844.90/x
  3. Step 3: Cross multiply
    1,428,413.94x = 1,971,205.67 × 783,844.90
  4. Step 4: Simplify right side
    1,428,413.94x = 1,545,119,508,312.18
  5. Step 5: Solve for x
    x = 1,545,119,508,312.18/1,428,413.94
  6. Step 6: Final answer
    x = 1,081,702.90

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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.