Home / 971,181.17-1,457,191.38-521,376.78

Finding the Fourth Proportional to 971,181.17, 1,457,191.38 and 521,376.78

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Solution

The fourth proportional to 971,181.17, 1,457,191.38 and 521,376.78 is: 782,290.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    971,181.17 : 1,457,191.38 = 521,376.78 : x
  2. Step 2: Convert to fraction form
    971,181.17/1,457,191.38 = 521,376.78/x
  3. Step 3: Cross multiply
    971,181.17x = 1,457,191.38 × 521,376.78
  4. Step 4: Simplify right side
    971,181.17x = 759,745,749,548.16
  5. Step 5: Solve for x
    x = 759,745,749,548.16/971,181.17
  6. Step 6: Final answer
    x = 782,290.45

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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.