Home / 1,273,283.81-1,909,520.30-420,196.67

Finding the Fourth Proportional to 1,273,283.81, 1,909,520.30 and 420,196.67

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Solution

The fourth proportional to 1,273,283.81, 1,909,520.30 and 420,196.67 is: 630,161.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,273,283.81 : 1,909,520.30 = 420,196.67 : x
  2. Step 2: Convert to fraction form
    1,273,283.81/1,909,520.30 = 420,196.67/x
  3. Step 3: Cross multiply
    1,273,283.81x = 1,909,520.30 × 420,196.67
  4. Step 4: Simplify right side
    1,273,283.81x = 802,374,061,809.80
  5. Step 5: Solve for x
    x = 802,374,061,809.80/1,273,283.81
  6. Step 6: Final answer
    x = 630,161.21

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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.