Home / 1,189,218.60-1,784,043.90-390,277.80

Finding the Fourth Proportional to 1,189,218.60, 1,784,043.90 and 390,277.80

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Solution

The fourth proportional to 1,189,218.60, 1,784,043.90 and 390,277.80 is: 585,487.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,218.60 : 1,784,043.90 = 390,277.80 : x
  2. Step 2: Convert to fraction form
    1,189,218.60/1,784,043.90 = 390,277.80/x
  3. Step 3: Cross multiply
    1,189,218.60x = 1,784,043.90 × 390,277.80
  4. Step 4: Simplify right side
    1,189,218.60x = 696,272,728,395.42
  5. Step 5: Solve for x
    x = 696,272,728,395.42/1,189,218.60
  6. Step 6: Final answer
    x = 585,487.59

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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.