Home / 1,214,284.32-1,821,255.36-763,631.52

Finding the Fourth Proportional to 1,214,284.32, 1,821,255.36 and 763,631.52

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Solution

The fourth proportional to 1,214,284.32, 1,821,255.36 and 763,631.52 is: 1,145,339.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,214,284.32 : 1,821,255.36 = 763,631.52 : x
  2. Step 2: Convert to fraction form
    1,214,284.32/1,821,255.36 = 763,631.52/x
  3. Step 3: Cross multiply
    1,214,284.32x = 1,821,255.36 × 763,631.52
  4. Step 4: Simplify right side
    1,214,284.32x = 1,390,767,998,864.95
  5. Step 5: Solve for x
    x = 1,390,767,998,864.95/1,214,284.32
  6. Step 6: Final answer
    x = 1,145,339.67

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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.