Home / 1,188,583.84-1,640,236-644,718.26

Finding the Fourth Proportional to 1,188,583.84, 1,640,236 and 644,718.26

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Solution

The fourth proportional to 1,188,583.84, 1,640,236 and 644,718.26 is: 889,705.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,583.84 : 1,640,236 = 644,718.26 : x
  2. Step 2: Convert to fraction form
    1,188,583.84/1,640,236 = 644,718.26/x
  3. Step 3: Cross multiply
    1,188,583.84x = 1,640,236 × 644,718.26
  4. Step 4: Simplify right side
    1,188,583.84x = 1,057,490,099,909.36
  5. Step 5: Solve for x
    x = 1,057,490,099,909.36/1,188,583.84
  6. Step 6: Final answer
    x = 889,705.94

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1.5x scale

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.