Home / 745,431.55-1,028,667.45-455,527.87

Finding the Fourth Proportional to 745,431.55, 1,028,667.45 and 455,527.87

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Solution

The fourth proportional to 745,431.55, 1,028,667.45 and 455,527.87 is: 628,611.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,431.55 : 1,028,667.45 = 455,527.87 : x
  2. Step 2: Convert to fraction form
    745,431.55/1,028,667.45 = 455,527.87/x
  3. Step 3: Cross multiply
    745,431.55x = 1,028,667.45 × 455,527.87
  4. Step 4: Simplify right side
    745,431.55x = 468,586,692,436.83
  5. Step 5: Solve for x
    x = 468,586,692,436.83/745,431.55
  6. Step 6: Final answer
    x = 628,611.30

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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.