Home / 679,938.20-1,017,391.64-410,222.78

Finding the Fourth Proportional to 679,938.20, 1,017,391.64 and 410,222.78

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Solution

The fourth proportional to 679,938.20, 1,017,391.64 and 410,222.78 is: 613,816.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,938.20 : 1,017,391.64 = 410,222.78 : x
  2. Step 2: Convert to fraction form
    679,938.20/1,017,391.64 = 410,222.78/x
  3. Step 3: Cross multiply
    679,938.20x = 1,017,391.64 × 410,222.78
  4. Step 4: Simplify right side
    679,938.20x = 417,357,219,771.49
  5. Step 5: Solve for x
    x = 417,357,219,771.49/679,938.20
  6. Step 6: Final answer
    x = 613,816.41

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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.