Home / 1,645,131.40-2,270,265.78-919,970.80

Finding the Fourth Proportional to 1,645,131.40, 2,270,265.78 and 919,970.80

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Solution

The fourth proportional to 1,645,131.40, 2,270,265.78 and 919,970.80 is: 1,269,551.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,645,131.40 : 2,270,265.78 = 919,970.80 : x
  2. Step 2: Convert to fraction form
    1,645,131.40/2,270,265.78 = 919,970.80/x
  3. Step 3: Cross multiply
    1,645,131.40x = 2,270,265.78 × 919,970.80
  4. Step 4: Simplify right side
    1,645,131.40x = 2,088,578,225,839.22
  5. Step 5: Solve for x
    x = 2,088,578,225,839.22/1,645,131.40
  6. Step 6: Final answer
    x = 1,269,551.01

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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.