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Finding the Fourth Proportional to 3,215,765.67, 4,823,648.55 and 971,903.67

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Solution

The fourth proportional to 3,215,765.67, 4,823,648.55 and 971,903.67 is: 1,457,855.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,215,765.67 : 4,823,648.55 = 971,903.67 : x
  2. Step 2: Convert to fraction form
    3,215,765.67/4,823,648.55 = 971,903.67/x
  3. Step 3: Cross multiply
    3,215,765.67x = 4,823,648.55 × 971,903.67
  4. Step 4: Simplify right side
    3,215,765.67x = 4,688,121,728,535.18
  5. Step 5: Solve for x
    x = 4,688,121,728,535.18/3,215,765.67
  6. Step 6: Final answer
    x = 1,457,855.52

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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.