Home / 1,207,428.60-1,811,142.90-543,876.60

Finding the Fourth Proportional to 1,207,428.60, 1,811,142.90 and 543,876.60

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Solution

The fourth proportional to 1,207,428.60, 1,811,142.90 and 543,876.60 is: 815,814.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207,428.60 : 1,811,142.90 = 543,876.60 : x
  2. Step 2: Convert to fraction form
    1,207,428.60/1,811,142.90 = 543,876.60/x
  3. Step 3: Cross multiply
    1,207,428.60x = 1,811,142.90 × 543,876.60
  4. Step 4: Simplify right side
    1,207,428.60x = 985,038,242,566.14
  5. Step 5: Solve for x
    x = 985,038,242,566.14/1,207,428.60
  6. Step 6: Final answer
    x = 815,814.90

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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.