Home / 1,428,497.34-1,971,383.10-783,940.76

Finding the Fourth Proportional to 1,428,497.34, 1,971,383.10 and 783,940.76

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Solution

The fourth proportional to 1,428,497.34, 1,971,383.10 and 783,940.76 is: 1,081,869.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,497.34 : 1,971,383.10 = 783,940.76 : x
  2. Step 2: Convert to fraction form
    1,428,497.34/1,971,383.10 = 783,940.76/x
  3. Step 3: Cross multiply
    1,428,497.34x = 1,971,383.10 × 783,940.76
  4. Step 4: Simplify right side
    1,428,497.34x = 1,545,447,565,665.16
  5. Step 5: Solve for x
    x = 1,545,447,565,665.16/1,428,497.34
  6. Step 6: Final answer
    x = 1,081,869.40

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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.