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Finding the Fourth Proportional to 679,342.80, 1,019,014.20 and 605,859.60

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Solution

The fourth proportional to 679,342.80, 1,019,014.20 and 605,859.60 is: 908,789.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,342.80 : 1,019,014.20 = 605,859.60 : x
  2. Step 2: Convert to fraction form
    679,342.80/1,019,014.20 = 605,859.60/x
  3. Step 3: Cross multiply
    679,342.80x = 1,019,014.20 × 605,859.60
  4. Step 4: Simplify right side
    679,342.80x = 617,379,535,606.32
  5. Step 5: Solve for x
    x = 617,379,535,606.32/679,342.80
  6. Step 6: Final answer
    x = 908,789.40

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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.