Home / 1,122,136.47-1,548,550.09-638,701.64

Finding the Fourth Proportional to 1,122,136.47, 1,548,550.09 and 638,701.64

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Solution

The fourth proportional to 1,122,136.47, 1,548,550.09 and 638,701.64 is: 881,409.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,122,136.47 : 1,548,550.09 = 638,701.64 : x
  2. Step 2: Convert to fraction form
    1,122,136.47/1,548,550.09 = 638,701.64/x
  3. Step 3: Cross multiply
    1,122,136.47x = 1,548,550.09 × 638,701.64
  4. Step 4: Simplify right side
    1,122,136.47x = 989,061,480,967.84
  5. Step 5: Solve for x
    x = 989,061,480,967.84/1,122,136.47
  6. Step 6: Final answer
    x = 881,409.26

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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.