Home / 745,431.79-1,028,667.80-455,528.11

Finding the Fourth Proportional to 745,431.79, 1,028,667.80 and 455,528.11

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Solution

The fourth proportional to 745,431.79, 1,028,667.80 and 455,528.11 is: 628,611.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,431.79 : 1,028,667.80 = 455,528.11 : x
  2. Step 2: Convert to fraction form
    745,431.79/1,028,667.80 = 455,528.11/x
  3. Step 3: Cross multiply
    745,431.79x = 1,028,667.80 × 455,528.11
  4. Step 4: Simplify right side
    745,431.79x = 468,587,098,751.86
  5. Step 5: Solve for x
    x = 468,587,098,751.86/745,431.79
  6. Step 6: Final answer
    x = 628,611.64

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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.