Home / 679,969.40-1,019,954.10-409,364.60

Finding the Fourth Proportional to 679,969.40, 1,019,954.10 and 409,364.60

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Solution

The fourth proportional to 679,969.40, 1,019,954.10 and 409,364.60 is: 614,046.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,969.40 : 1,019,954.10 = 409,364.60 : x
  2. Step 2: Convert to fraction form
    679,969.40/1,019,954.10 = 409,364.60/x
  3. Step 3: Cross multiply
    679,969.40x = 1,019,954.10 × 409,364.60
  4. Step 4: Simplify right side
    679,969.40x = 417,533,102,164.86
  5. Step 5: Solve for x
    x = 417,533,102,164.86/679,969.40
  6. Step 6: Final answer
    x = 614,046.90

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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.