Home / 879,278.80-1,318,918.20-520,027.60

Finding the Fourth Proportional to 879,278.80, 1,318,918.20 and 520,027.60

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Solution

The fourth proportional to 879,278.80, 1,318,918.20 and 520,027.60 is: 780,041.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,278.80 : 1,318,918.20 = 520,027.60 : x
  2. Step 2: Convert to fraction form
    879,278.80/1,318,918.20 = 520,027.60/x
  3. Step 3: Cross multiply
    879,278.80x = 1,318,918.20 × 520,027.60
  4. Step 4: Simplify right side
    879,278.80x = 685,873,866,142.32
  5. Step 5: Solve for x
    x = 685,873,866,142.32/879,278.80
  6. Step 6: Final answer
    x = 780,041.40

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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.