Home / 829,330.20-1,243,995.30-409,426.20

Finding the Fourth Proportional to 829,330.20, 1,243,995.30 and 409,426.20

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Solution

The fourth proportional to 829,330.20, 1,243,995.30 and 409,426.20 is: 614,139.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    829,330.20 : 1,243,995.30 = 409,426.20 : x
  2. Step 2: Convert to fraction form
    829,330.20/1,243,995.30 = 409,426.20/x
  3. Step 3: Cross multiply
    829,330.20x = 1,243,995.30 × 409,426.20
  4. Step 4: Simplify right side
    829,330.20x = 509,324,268,496.86
  5. Step 5: Solve for x
    x = 509,324,268,496.86/829,330.20
  6. Step 6: Final answer
    x = 614,139.30

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Half scale
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Double scale
Find fourth proportional to 829,331.20, 1,243,996.80 and 409,427.20
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.