Home / 811,460.37-1,216,399.59-338,281.05

Finding the Fourth Proportional to 811,460.37, 1,216,399.59 and 338,281.05

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Solution

The fourth proportional to 811,460.37, 1,216,399.59 and 338,281.05 is: 507,091.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,460.37 : 1,216,399.59 = 338,281.05 : x
  2. Step 2: Convert to fraction form
    811,460.37/1,216,399.59 = 338,281.05/x
  3. Step 3: Cross multiply
    811,460.37x = 1,216,399.59 × 338,281.05
  4. Step 4: Simplify right side
    811,460.37x = 411,484,928,833.36
  5. Step 5: Solve for x
    x = 411,484,928,833.36/811,460.37
  6. Step 6: Final answer
    x = 507,091.84

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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.