Home / 1,428,438.21-1,971,274.85-783,852.77

Finding the Fourth Proportional to 1,428,438.21, 1,971,274.85 and 783,852.77

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Solution

The fourth proportional to 1,428,438.21, 1,971,274.85 and 783,852.77 is: 1,081,733.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,438.21 : 1,971,274.85 = 783,852.77 : x
  2. Step 2: Convert to fraction form
    1,428,438.21/1,971,274.85 = 783,852.77/x
  3. Step 3: Cross multiply
    1,428,438.21x = 1,971,274.85 × 783,852.77
  4. Step 4: Simplify right side
    1,428,438.21x = 1,545,189,237,828.20
  5. Step 5: Solve for x
    x = 1,545,189,237,828.20/1,428,438.21
  6. Step 6: Final answer
    x = 1,081,733.34

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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.