Home / 554,239.42-764,785.40-312,507.60

Finding the Fourth Proportional to 554,239.42, 764,785.40 and 312,507.60

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Solution

The fourth proportional to 554,239.42, 764,785.40 and 312,507.60 is: 431,223.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,239.42 : 764,785.40 = 312,507.60 : x
  2. Step 2: Convert to fraction form
    554,239.42/764,785.40 = 312,507.60/x
  3. Step 3: Cross multiply
    554,239.42x = 764,785.40 × 312,507.60
  4. Step 4: Simplify right side
    554,239.42x = 239,001,249,869.04
  5. Step 5: Solve for x
    x = 239,001,249,869.04/554,239.42
  6. Step 6: Final answer
    x = 431,223.84

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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.