Home / 985,507.20-1,478,260.80-668,246.40

Finding the Fourth Proportional to 985,507.20, 1,478,260.80 and 668,246.40

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Solution

The fourth proportional to 985,507.20, 1,478,260.80 and 668,246.40 is: 1,002,369.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,507.20 : 1,478,260.80 = 668,246.40 : x
  2. Step 2: Convert to fraction form
    985,507.20/1,478,260.80 = 668,246.40/x
  3. Step 3: Cross multiply
    985,507.20x = 1,478,260.80 × 668,246.40
  4. Step 4: Simplify right side
    985,507.20x = 987,842,457,861.12
  5. Step 5: Solve for x
    x = 987,842,457,861.12/985,507.20
  6. Step 6: Final answer
    x = 1,002,369.60

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Double scale
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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.