Home / 1,418,914.40-2,128,371.60-421,642.40

Finding the Fourth Proportional to 1,418,914.40, 2,128,371.60 and 421,642.40

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Solution

The fourth proportional to 1,418,914.40, 2,128,371.60 and 421,642.40 is: 632,463.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,418,914.40 : 2,128,371.60 = 421,642.40 : x
  2. Step 2: Convert to fraction form
    1,418,914.40/2,128,371.60 = 421,642.40/x
  3. Step 3: Cross multiply
    1,418,914.40x = 2,128,371.60 × 421,642.40
  4. Step 4: Simplify right side
    1,418,914.40x = 897,411,709,515.84
  5. Step 5: Solve for x
    x = 897,411,709,515.84/1,418,914.40
  6. Step 6: Final answer
    x = 632,463.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.