Home / 554,228.05-764,769.73-312,496.20

Finding the Fourth Proportional to 554,228.05, 764,769.73 and 312,496.20

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Solution

The fourth proportional to 554,228.05, 764,769.73 and 312,496.20 is: 431,208.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,228.05 : 764,769.73 = 312,496.20 : x
  2. Step 2: Convert to fraction form
    554,228.05/764,769.73 = 312,496.20/x
  3. Step 3: Cross multiply
    554,228.05x = 764,769.73 × 312,496.20
  4. Step 4: Simplify right side
    554,228.05x = 238,987,637,172.60
  5. Step 5: Solve for x
    x = 238,987,637,172.60/554,228.05
  6. Step 6: Final answer
    x = 431,208.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.