Home / 656,579.20-984,285.60-390,056.80

Finding the Fourth Proportional to 656,579.20, 984,285.60 and 390,056.80

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Solution

The fourth proportional to 656,579.20, 984,285.60 and 390,056.80 is: 584,738.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,579.20 : 984,285.60 = 390,056.80 : x
  2. Step 2: Convert to fraction form
    656,579.20/984,285.60 = 390,056.80/x
  3. Step 3: Cross multiply
    656,579.20x = 984,285.60 × 390,056.80
  4. Step 4: Simplify right side
    656,579.20x = 383,927,291,422.08
  5. Step 5: Solve for x
    x = 383,927,291,422.08/656,579.20
  6. Step 6: Final answer
    x = 584,738.74

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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.