Home / 1,290,931.80-1,934,626.20-816,768.33

Finding the Fourth Proportional to 1,290,931.80, 1,934,626.20 and 816,768.33

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Solution

The fourth proportional to 1,290,931.80, 1,934,626.20 and 816,768.33 is: 1,224,031.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,931.80 : 1,934,626.20 = 816,768.33 : x
  2. Step 2: Convert to fraction form
    1,290,931.80/1,934,626.20 = 816,768.33/x
  3. Step 3: Cross multiply
    1,290,931.80x = 1,934,626.20 × 816,768.33
  4. Step 4: Simplify right side
    1,290,931.80x = 1,580,141,410,548.25
  5. Step 5: Solve for x
    x = 1,580,141,410,548.25/1,290,931.80
  6. Step 6: Final answer
    x = 1,224,031.67

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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.