Home / 745,431.80-1,028,667.80-455,528.12

Finding the Fourth Proportional to 745,431.80, 1,028,667.80 and 455,528.12

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Solution

The fourth proportional to 745,431.80, 1,028,667.80 and 455,528.12 is: 628,611.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,431.80 : 1,028,667.80 = 455,528.12 : x
  2. Step 2: Convert to fraction form
    745,431.80/1,028,667.80 = 455,528.12/x
  3. Step 3: Cross multiply
    745,431.80x = 1,028,667.80 × 455,528.12
  4. Step 4: Simplify right side
    745,431.80x = 468,587,101,617.56
  5. Step 5: Solve for x
    x = 468,587,101,617.56/745,431.80
  6. Step 6: Final answer
    x = 628,611.64

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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.