Home / 1,021,699.80-1,529,925.30-809,998.20

Finding the Fourth Proportional to 1,021,699.80, 1,529,925.30 and 809,998.20

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Solution

The fourth proportional to 1,021,699.80, 1,529,925.30 and 809,998.20 is: 1,212,916.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,021,699.80 : 1,529,925.30 = 809,998.20 : x
  2. Step 2: Convert to fraction form
    1,021,699.80/1,529,925.30 = 809,998.20/x
  3. Step 3: Cross multiply
    1,021,699.80x = 1,529,925.30 × 809,998.20
  4. Step 4: Simplify right side
    1,021,699.80x = 1,239,236,739,134.46
  5. Step 5: Solve for x
    x = 1,239,236,739,134.46/1,021,699.80
  6. Step 6: Final answer
    x = 1,212,916.69

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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.