Home / 756,388.40-1,134,582.60-383,140.40

Finding the Fourth Proportional to 756,388.40, 1,134,582.60 and 383,140.40

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Solution

The fourth proportional to 756,388.40, 1,134,582.60 and 383,140.40 is: 574,710.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    756,388.40 : 1,134,582.60 = 383,140.40 : x
  2. Step 2: Convert to fraction form
    756,388.40/1,134,582.60 = 383,140.40/x
  3. Step 3: Cross multiply
    756,388.40x = 1,134,582.60 × 383,140.40
  4. Step 4: Simplify right side
    756,388.40x = 434,704,431,197.04
  5. Step 5: Solve for x
    x = 434,704,431,197.04/756,388.40
  6. Step 6: Final answer
    x = 574,710.60

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Half scale
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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.