Home / 669,643.20-1,004,464.80-618,321.60

Finding the Fourth Proportional to 669,643.20, 1,004,464.80 and 618,321.60

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Solution

The fourth proportional to 669,643.20, 1,004,464.80 and 618,321.60 is: 927,482.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,643.20 : 1,004,464.80 = 618,321.60 : x
  2. Step 2: Convert to fraction form
    669,643.20/1,004,464.80 = 618,321.60/x
  3. Step 3: Cross multiply
    669,643.20x = 1,004,464.80 × 618,321.60
  4. Step 4: Simplify right side
    669,643.20x = 621,082,282,279.68
  5. Step 5: Solve for x
    x = 621,082,282,279.68/669,643.20
  6. Step 6: Final answer
    x = 927,482.40

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Similar ratio
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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.