Home / 811,964.63-1,215,520.35-491,145.59

Finding the Fourth Proportional to 811,964.63, 1,215,520.35 and 491,145.59

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Solution

The fourth proportional to 811,964.63, 1,215,520.35 and 491,145.59 is: 735,250.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,964.63 : 1,215,520.35 = 491,145.59 : x
  2. Step 2: Convert to fraction form
    811,964.63/1,215,520.35 = 491,145.59/x
  3. Step 3: Cross multiply
    811,964.63x = 1,215,520.35 × 491,145.59
  4. Step 4: Simplify right side
    811,964.63x = 596,997,459,457.76
  5. Step 5: Solve for x
    x = 596,997,459,457.76/811,964.63
  6. Step 6: Final answer
    x = 735,250.57

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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.