Home / 1,328,025.60-1,990,828.80-486,374.40

Finding the Fourth Proportional to 1,328,025.60, 1,990,828.80 and 486,374.40

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Solution

The fourth proportional to 1,328,025.60, 1,990,828.80 and 486,374.40 is: 729,118.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,025.60 : 1,990,828.80 = 486,374.40 : x
  2. Step 2: Convert to fraction form
    1,328,025.60/1,990,828.80 = 486,374.40/x
  3. Step 3: Cross multiply
    1,328,025.60x = 1,990,828.80 × 486,374.40
  4. Step 4: Simplify right side
    1,328,025.60x = 968,288,163,102.72
  5. Step 5: Solve for x
    x = 968,288,163,102.72/1,328,025.60
  6. Step 6: Final answer
    x = 729,118.60

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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.