Home / 971,212.20-1,457,238.60-521,408.40

Finding the Fourth Proportional to 971,212.20, 1,457,238.60 and 521,408.40

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Solution

The fourth proportional to 971,212.20, 1,457,238.60 and 521,408.40 is: 782,338.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    971,212.20 : 1,457,238.60 = 521,408.40 : x
  2. Step 2: Convert to fraction form
    971,212.20/1,457,238.60 = 521,408.40/x
  3. Step 3: Cross multiply
    971,212.20x = 1,457,238.60 × 521,408.40
  4. Step 4: Simplify right side
    971,212.20x = 759,816,446,844.24
  5. Step 5: Solve for x
    x = 759,816,446,844.24/971,212.20
  6. Step 6: Final answer
    x = 782,338.24

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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.