Home / 1,245,011.40-1,869,266.70-772,619.40

Finding the Fourth Proportional to 1,245,011.40, 1,869,266.70 and 772,619.40

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Solution

The fourth proportional to 1,245,011.40, 1,869,266.70 and 772,619.40 is: 1,160,014.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,011.40 : 1,869,266.70 = 772,619.40 : x
  2. Step 2: Convert to fraction form
    1,245,011.40/1,869,266.70 = 772,619.40/x
  3. Step 3: Cross multiply
    1,245,011.40x = 1,869,266.70 × 772,619.40
  4. Step 4: Simplify right side
    1,245,011.40x = 1,444,231,716,193.98
  5. Step 5: Solve for x
    x = 1,444,231,716,193.98/1,245,011.40
  6. Step 6: Final answer
    x = 1,160,014.85

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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.