Home / 1,428,395.19-1,971,307.79-783,939.96

Finding the Fourth Proportional to 1,428,395.19, 1,971,307.79 and 783,939.96

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Solution

The fourth proportional to 1,428,395.19, 1,971,307.79 and 783,939.96 is: 1,081,904.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,395.19 : 1,971,307.79 = 783,939.96 : x
  2. Step 2: Convert to fraction form
    1,428,395.19/1,971,307.79 = 783,939.96/x
  3. Step 3: Cross multiply
    1,428,395.19x = 1,971,307.79 × 783,939.96
  4. Step 4: Simplify right side
    1,428,395.19x = 1,545,386,950,040.29
  5. Step 5: Solve for x
    x = 1,545,386,950,040.29/1,428,395.19
  6. Step 6: Final answer
    x = 1,081,904.34

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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.