Home / 726,365.80-1,089,030.30-410,919.40

Finding the Fourth Proportional to 726,365.80, 1,089,030.30 and 410,919.40

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Solution

The fourth proportional to 726,365.80, 1,089,030.30 and 410,919.40 is: 616,085.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,365.80 : 1,089,030.30 = 410,919.40 : x
  2. Step 2: Convert to fraction form
    726,365.80/1,089,030.30 = 410,919.40/x
  3. Step 3: Cross multiply
    726,365.80x = 1,089,030.30 × 410,919.40
  4. Step 4: Simplify right side
    726,365.80x = 447,503,677,457.82
  5. Step 5: Solve for x
    x = 447,503,677,457.82/726,365.80
  6. Step 6: Final answer
    x = 616,085.83

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1.5x scale

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.