Home / 856,428.40-1,284,642.60-501,842.80

Finding the Fourth Proportional to 856,428.40, 1,284,642.60 and 501,842.80

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Solution

The fourth proportional to 856,428.40, 1,284,642.60 and 501,842.80 is: 752,764.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,428.40 : 1,284,642.60 = 501,842.80 : x
  2. Step 2: Convert to fraction form
    856,428.40/1,284,642.60 = 501,842.80/x
  3. Step 3: Cross multiply
    856,428.40x = 1,284,642.60 × 501,842.80
  4. Step 4: Simplify right side
    856,428.40x = 644,688,639,383.28
  5. Step 5: Solve for x
    x = 644,688,639,383.28/856,428.40
  6. Step 6: Final answer
    x = 752,764.20

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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.