Home / 1,043,428.80-1,565,661.60-412,363.20

Finding the Fourth Proportional to 1,043,428.80, 1,565,661.60 and 412,363.20

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Solution

The fourth proportional to 1,043,428.80, 1,565,661.60 and 412,363.20 is: 618,749.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,043,428.80 : 1,565,661.60 = 412,363.20 : x
  2. Step 2: Convert to fraction form
    1,043,428.80/1,565,661.60 = 412,363.20/x
  3. Step 3: Cross multiply
    1,043,428.80x = 1,565,661.60 × 412,363.20
  4. Step 4: Simplify right side
    1,043,428.80x = 645,621,227,493.12
  5. Step 5: Solve for x
    x = 645,621,227,493.12/1,043,428.80
  6. Step 6: Final answer
    x = 618,749.67

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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.