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Finding the Fourth Proportional to 669,786.60, 924,289.44 and 383,288.40

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Solution

The fourth proportional to 669,786.60, 924,289.44 and 383,288.40 is: 528,928.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,786.60 : 924,289.44 = 383,288.40 : x
  2. Step 2: Convert to fraction form
    669,786.60/924,289.44 = 383,288.40/x
  3. Step 3: Cross multiply
    669,786.60x = 924,289.44 × 383,288.40
  4. Step 4: Simplify right side
    669,786.60x = 354,269,420,594.50
  5. Step 5: Solve for x
    x = 354,269,420,594.50/669,786.60
  6. Step 6: Final answer
    x = 528,928.80

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.