Home / 671,231.70-1,006,847.55-645,426.90

Finding the Fourth Proportional to 671,231.70, 1,006,847.55 and 645,426.90

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Solution

The fourth proportional to 671,231.70, 1,006,847.55 and 645,426.90 is: 968,140.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,231.70 : 1,006,847.55 = 645,426.90 : x
  2. Step 2: Convert to fraction form
    671,231.70/1,006,847.55 = 645,426.90/x
  3. Step 3: Cross multiply
    671,231.70x = 1,006,847.55 × 645,426.90
  4. Step 4: Simplify right side
    671,231.70x = 649,846,492,969.10
  5. Step 5: Solve for x
    x = 649,846,492,969.10/671,231.70
  6. Step 6: Final answer
    x = 968,140.35

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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.