Home / 1,428,491.31-1,971,220.89-783,953.02

Finding the Fourth Proportional to 1,428,491.31, 1,971,220.89 and 783,953.02

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Solution

The fourth proportional to 1,428,491.31, 1,971,220.89 and 783,953.02 is: 1,081,801.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,491.31 : 1,971,220.89 = 783,953.02 : x
  2. Step 2: Convert to fraction form
    1,428,491.31/1,971,220.89 = 783,953.02/x
  3. Step 3: Cross multiply
    1,428,491.31x = 1,971,220.89 × 783,953.02
  4. Step 4: Simplify right side
    1,428,491.31x = 1,545,344,569,802.59
  5. Step 5: Solve for x
    x = 1,545,344,569,802.59/1,428,491.31
  6. Step 6: Final answer
    x = 1,081,801.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.