Home / 815,420.70-1,222,693.65-341,570.70

Finding the Fourth Proportional to 815,420.70, 1,222,693.65 and 341,570.70

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Solution

The fourth proportional to 815,420.70, 1,222,693.65 and 341,570.70 is: 512,172.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,420.70 : 1,222,693.65 = 341,570.70 : x
  2. Step 2: Convert to fraction form
    815,420.70/1,222,693.65 = 341,570.70/x
  3. Step 3: Cross multiply
    815,420.70x = 1,222,693.65 × 341,570.70
  4. Step 4: Simplify right side
    815,420.70x = 417,636,325,916.06
  5. Step 5: Solve for x
    x = 417,636,325,916.06/815,420.70
  6. Step 6: Final answer
    x = 512,172.83

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1.5x scale

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.