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Finding the Fourth Proportional to 1,354,858.46, 1,869,745.91 and 743,036.70

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Solution

The fourth proportional to 1,354,858.46, 1,869,745.91 and 743,036.70 is: 1,025,413.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,354,858.46 : 1,869,745.91 = 743,036.70 : x
  2. Step 2: Convert to fraction form
    1,354,858.46/1,869,745.91 = 743,036.70/x
  3. Step 3: Cross multiply
    1,354,858.46x = 1,869,745.91 × 743,036.70
  4. Step 4: Simplify right side
    1,354,858.46x = 1,389,289,827,089.71
  5. Step 5: Solve for x
    x = 1,389,289,827,089.71/1,354,858.46
  6. Step 6: Final answer
    x = 1,025,413.26

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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.