Home / 656,421.40-984,632.10-605,099.80

Finding the Fourth Proportional to 656,421.40, 984,632.10 and 605,099.80

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Solution

The fourth proportional to 656,421.40, 984,632.10 and 605,099.80 is: 907,649.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,421.40 : 984,632.10 = 605,099.80 : x
  2. Step 2: Convert to fraction form
    656,421.40/984,632.10 = 605,099.80/x
  3. Step 3: Cross multiply
    656,421.40x = 984,632.10 × 605,099.80
  4. Step 4: Simplify right side
    656,421.40x = 595,800,686,783.58
  5. Step 5: Solve for x
    x = 595,800,686,783.58/656,421.40
  6. Step 6: Final answer
    x = 907,649.70

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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.