Home / 1,210,539.20-1,815,808.80-620,715.20

Finding the Fourth Proportional to 1,210,539.20, 1,815,808.80 and 620,715.20

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Solution

The fourth proportional to 1,210,539.20, 1,815,808.80 and 620,715.20 is: 931,072.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,539.20 : 1,815,808.80 = 620,715.20 : x
  2. Step 2: Convert to fraction form
    1,210,539.20/1,815,808.80 = 620,715.20/x
  3. Step 3: Cross multiply
    1,210,539.20x = 1,815,808.80 × 620,715.20
  4. Step 4: Simplify right side
    1,210,539.20x = 1,127,100,122,453.76
  5. Step 5: Solve for x
    x = 1,127,100,122,453.76/1,210,539.20
  6. Step 6: Final answer
    x = 931,072.80

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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.