Home / 645,164.72-890,229.62-369,479.70

Finding the Fourth Proportional to 645,164.72, 890,229.62 and 369,479.70

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Solution

The fourth proportional to 645,164.72, 890,229.62 and 369,479.70 is: 509,826.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,164.72 : 890,229.62 = 369,479.70 : x
  2. Step 2: Convert to fraction form
    645,164.72/890,229.62 = 369,479.70/x
  3. Step 3: Cross multiply
    645,164.72x = 890,229.62 × 369,479.70
  4. Step 4: Simplify right side
    645,164.72x = 328,921,772,928.71
  5. Step 5: Solve for x
    x = 328,921,772,928.71/645,164.72
  6. Step 6: Final answer
    x = 509,826.04

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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.