Home / 1,385,215.60-2,077,823.40-438,660.40

Finding the Fourth Proportional to 1,385,215.60, 2,077,823.40 and 438,660.40

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Solution

The fourth proportional to 1,385,215.60, 2,077,823.40 and 438,660.40 is: 657,990.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385,215.60 : 2,077,823.40 = 438,660.40 : x
  2. Step 2: Convert to fraction form
    1,385,215.60/2,077,823.40 = 438,660.40/x
  3. Step 3: Cross multiply
    1,385,215.60x = 2,077,823.40 × 438,660.40
  4. Step 4: Simplify right side
    1,385,215.60x = 911,458,843,773.36
  5. Step 5: Solve for x
    x = 911,458,843,773.36/1,385,215.60
  6. Step 6: Final answer
    x = 657,990.60

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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.