Home / 856,199.81-1,284,721.76-400,821.92

Finding the Fourth Proportional to 856,199.81, 1,284,721.76 and 400,821.92

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Solution

The fourth proportional to 856,199.81, 1,284,721.76 and 400,821.92 is: 601,430.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,199.81 : 1,284,721.76 = 400,821.92 : x
  2. Step 2: Convert to fraction form
    856,199.81/1,284,721.76 = 400,821.92/x
  3. Step 3: Cross multiply
    856,199.81x = 1,284,721.76 × 400,821.92
  4. Step 4: Simplify right side
    856,199.81x = 514,944,642,508.98
  5. Step 5: Solve for x
    x = 514,944,642,508.98/856,199.81
  6. Step 6: Final answer
    x = 601,430.46

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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.