Home / 1,428,386.94-1,971,168.57-783,817.92

Finding the Fourth Proportional to 1,428,386.94, 1,971,168.57 and 783,817.92

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Solution

The fourth proportional to 1,428,386.94, 1,971,168.57 and 783,817.92 is: 1,081,665.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,386.94 : 1,971,168.57 = 783,817.92 : x
  2. Step 2: Convert to fraction form
    1,428,386.94/1,971,168.57 = 783,817.92/x
  3. Step 3: Cross multiply
    1,428,386.94x = 1,971,168.57 × 783,817.92
  4. Step 4: Simplify right side
    1,428,386.94x = 1,545,037,248,506.77
  5. Step 5: Solve for x
    x = 1,545,037,248,506.77/1,428,386.94
  6. Step 6: Final answer
    x = 1,081,665.76

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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.