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Finding the Fourth Proportional to 999,602.98, 1,379,619.74 and 786,370.48

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Solution

The fourth proportional to 999,602.98, 1,379,619.74 and 786,370.48 is: 1,085,323.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,602.98 : 1,379,619.74 = 786,370.48 : x
  2. Step 2: Convert to fraction form
    999,602.98/1,379,619.74 = 786,370.48/x
  3. Step 3: Cross multiply
    999,602.98x = 1,379,619.74 × 786,370.48
  4. Step 4: Simplify right side
    999,602.98x = 1,084,892,235,678.15
  5. Step 5: Solve for x
    x = 1,084,892,235,678.15/999,602.98
  6. Step 6: Final answer
    x = 1,085,323.13

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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.