Home / 2,808,271.66-4,212,407.51-678,355.78

Finding the Fourth Proportional to 2,808,271.66, 4,212,407.51 and 678,355.78

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Solution

The fourth proportional to 2,808,271.66, 4,212,407.51 and 678,355.78 is: 1,017,533.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,808,271.66 : 4,212,407.51 = 678,355.78 : x
  2. Step 2: Convert to fraction form
    2,808,271.66/4,212,407.51 = 678,355.78/x
  3. Step 3: Cross multiply
    2,808,271.66x = 4,212,407.51 × 678,355.78
  4. Step 4: Simplify right side
    2,808,271.66x = 2,857,510,982,123.91
  5. Step 5: Solve for x
    x = 2,857,510,982,123.91/2,808,271.66
  6. Step 6: Final answer
    x = 1,017,533.67

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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.