Home / 1,620,007.70-2,429,428.35-821,023.70

Finding the Fourth Proportional to 1,620,007.70, 2,429,428.35 and 821,023.70

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Solution

The fourth proportional to 1,620,007.70, 2,429,428.35 and 821,023.70 is: 1,231,239.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,620,007.70 : 2,429,428.35 = 821,023.70 : x
  2. Step 2: Convert to fraction form
    1,620,007.70/2,429,428.35 = 821,023.70/x
  3. Step 3: Cross multiply
    1,620,007.70x = 2,429,428.35 × 821,023.70
  4. Step 4: Simplify right side
    1,620,007.70x = 1,994,618,252,801.90
  5. Step 5: Solve for x
    x = 1,994,618,252,801.90/1,620,007.70
  6. Step 6: Final answer
    x = 1,231,239.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.