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Finding the Fourth Proportional to 1,203,160, 1,660,360.80 and 666,616

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Solution

The fourth proportional to 1,203,160, 1,660,360.80 and 666,616 is: 919,930.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,203,160 : 1,660,360.80 = 666,616 : x
  2. Step 2: Convert to fraction form
    1,203,160/1,660,360.80 = 666,616/x
  3. Step 3: Cross multiply
    1,203,160x = 1,660,360.80 × 666,616
  4. Step 4: Simplify right side
    1,203,160x = 1,106,823,075,052.80
  5. Step 5: Solve for x
    x = 1,106,823,075,052.80/1,203,160
  6. Step 6: Final answer
    x = 919,930.08

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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.