Home / 434,721.20-652,081.80-392,730.80

Finding the Fourth Proportional to 434,721.20, 652,081.80 and 392,730.80

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Solution

The fourth proportional to 434,721.20, 652,081.80 and 392,730.80 is: 589,096.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,721.20 : 652,081.80 = 392,730.80 : x
  2. Step 2: Convert to fraction form
    434,721.20/652,081.80 = 392,730.80/x
  3. Step 3: Cross multiply
    434,721.20x = 652,081.80 × 392,730.80
  4. Step 4: Simplify right side
    434,721.20x = 256,092,606,979.44
  5. Step 5: Solve for x
    x = 256,092,606,979.44/434,721.20
  6. Step 6: Final answer
    x = 589,096.20

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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.