Home / 1,645,132.40-2,270,267.16-919,971.80

Finding the Fourth Proportional to 1,645,132.40, 2,270,267.16 and 919,971.80

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Solution

The fourth proportional to 1,645,132.40, 2,270,267.16 and 919,971.80 is: 1,269,552.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,645,132.40 : 2,270,267.16 = 919,971.80 : x
  2. Step 2: Convert to fraction form
    1,645,132.40/2,270,267.16 = 919,971.80/x
  3. Step 3: Cross multiply
    1,645,132.40x = 2,270,267.16 × 919,971.80
  4. Step 4: Simplify right side
    1,645,132.40x = 2,088,581,765,666.09
  5. Step 5: Solve for x
    x = 2,088,581,765,666.09/1,645,132.40
  6. Step 6: Final answer
    x = 1,269,552.39

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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.