Home / 1,555,824-2,147,039.04-840,432

Finding the Fourth Proportional to 1,555,824, 2,147,039.04 and 840,432

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Solution

The fourth proportional to 1,555,824, 2,147,039.04 and 840,432 is: 1,159,797.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555,824 : 2,147,039.04 = 840,432 : x
  2. Step 2: Convert to fraction form
    1,555,824/2,147,039.04 = 840,432/x
  3. Step 3: Cross multiply
    1,555,824x = 2,147,039.04 × 840,432
  4. Step 4: Simplify right side
    1,555,824x = 1,804,440,314,465.28
  5. Step 5: Solve for x
    x = 1,804,440,314,465.28/1,555,824
  6. Step 6: Final answer
    x = 1,159,797.20

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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.