Home / 1,878,438.40-2,819,212.80-869,113.60

Finding the Fourth Proportional to 1,878,438.40, 2,819,212.80 and 869,113.60

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Solution

The fourth proportional to 1,878,438.40, 2,819,212.80 and 869,113.60 is: 1,304,389.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,878,438.40 : 2,819,212.80 = 869,113.60 : x
  2. Step 2: Convert to fraction form
    1,878,438.40/2,819,212.80 = 869,113.60/x
  3. Step 3: Cross multiply
    1,878,438.40x = 2,819,212.80 × 869,113.60
  4. Step 4: Simplify right side
    1,878,438.40x = 2,450,216,185,774.08
  5. Step 5: Solve for x
    x = 2,450,216,185,774.08/1,878,438.40
  6. Step 6: Final answer
    x = 1,304,389.96

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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.