Home / 1,280,880.82-1,921,985.83-570,743.69

Finding the Fourth Proportional to 1,280,880.82, 1,921,985.83 and 570,743.69

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Solution

The fourth proportional to 1,280,880.82, 1,921,985.83 and 570,743.69 is: 856,411.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,880.82 : 1,921,985.83 = 570,743.69 : x
  2. Step 2: Convert to fraction form
    1,280,880.82/1,921,985.83 = 570,743.69/x
  3. Step 3: Cross multiply
    1,280,880.82x = 1,921,985.83 × 570,743.69
  4. Step 4: Simplify right side
    1,280,880.82x = 1,096,961,284,741.91
  5. Step 5: Solve for x
    x = 1,096,961,284,741.91/1,280,880.82
  6. Step 6: Final answer
    x = 856,411.67

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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.