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Finding the Fourth Proportional to 736,662.80, 1,104,216.60 and 420,438.80

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Solution

The fourth proportional to 736,662.80, 1,104,216.60 and 420,438.80 is: 630,214.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    736,662.80 : 1,104,216.60 = 420,438.80 : x
  2. Step 2: Convert to fraction form
    736,662.80/1,104,216.60 = 420,438.80/x
  3. Step 3: Cross multiply
    736,662.80x = 1,104,216.60 × 420,438.80
  4. Step 4: Simplify right side
    736,662.80x = 464,255,502,244.08
  5. Step 5: Solve for x
    x = 464,255,502,244.08/736,662.80
  6. Step 6: Final answer
    x = 630,214.40

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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.