Home / 679,477.20-1,019,993.40-399,152.40

Finding the Fourth Proportional to 679,477.20, 1,019,993.40 and 399,152.40

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Solution

The fourth proportional to 679,477.20, 1,019,993.40 and 399,152.40 is: 599,185.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,477.20 : 1,019,993.40 = 399,152.40 : x
  2. Step 2: Convert to fraction form
    679,477.20/1,019,993.40 = 399,152.40/x
  3. Step 3: Cross multiply
    679,477.20x = 1,019,993.40 × 399,152.40
  4. Step 4: Simplify right side
    679,477.20x = 407,132,813,594.16
  5. Step 5: Solve for x
    x = 407,132,813,594.16/679,477.20
  6. Step 6: Final answer
    x = 599,185.39

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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.