Home / 783,139.60-1,174,709.40-659,136.70

Finding the Fourth Proportional to 783,139.60, 1,174,709.40 and 659,136.70

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Solution

The fourth proportional to 783,139.60, 1,174,709.40 and 659,136.70 is: 988,705.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,139.60 : 1,174,709.40 = 659,136.70 : x
  2. Step 2: Convert to fraction form
    783,139.60/1,174,709.40 = 659,136.70/x
  3. Step 3: Cross multiply
    783,139.60x = 1,174,709.40 × 659,136.70
  4. Step 4: Simplify right side
    783,139.60x = 774,294,077,374.98
  5. Step 5: Solve for x
    x = 774,294,077,374.98/783,139.60
  6. Step 6: Final answer
    x = 988,705.05

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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.