Home / 671,857.40-1,006,619.70-435,078.20

Finding the Fourth Proportional to 671,857.40, 1,006,619.70 and 435,078.20

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Solution

The fourth proportional to 671,857.40, 1,006,619.70 and 435,078.20 is: 651,861.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,857.40 : 1,006,619.70 = 435,078.20 : x
  2. Step 2: Convert to fraction form
    671,857.40/1,006,619.70 = 435,078.20/x
  3. Step 3: Cross multiply
    671,857.40x = 1,006,619.70 × 435,078.20
  4. Step 4: Simplify right side
    671,857.40x = 437,958,287,160.54
  5. Step 5: Solve for x
    x = 437,958,287,160.54/671,857.40
  6. Step 6: Final answer
    x = 651,861.97

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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.