Home / 645,832.40-966,444.60-409,288.40

Finding the Fourth Proportional to 645,832.40, 966,444.60 and 409,288.40

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Solution

The fourth proportional to 645,832.40, 966,444.60 and 409,288.40 is: 612,472.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,832.40 : 966,444.60 = 409,288.40 : x
  2. Step 2: Convert to fraction form
    645,832.40/966,444.60 = 409,288.40/x
  3. Step 3: Cross multiply
    645,832.40x = 966,444.60 × 409,288.40
  4. Step 4: Simplify right side
    645,832.40x = 395,554,564,022.64
  5. Step 5: Solve for x
    x = 395,554,564,022.64/645,832.40
  6. Step 6: Final answer
    x = 612,472.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.