Home / 641,721.65-885,586.34-351,328.35

Finding the Fourth Proportional to 641,721.65, 885,586.34 and 351,328.35

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Solution

The fourth proportional to 641,721.65, 885,586.34 and 351,328.35 is: 484,838.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,721.65 : 885,586.34 = 351,328.35 : x
  2. Step 2: Convert to fraction form
    641,721.65/885,586.34 = 351,328.35/x
  3. Step 3: Cross multiply
    641,721.65x = 885,586.34 × 351,328.35
  4. Step 4: Simplify right side
    641,721.65x = 311,131,587,614.74
  5. Step 5: Solve for x
    x = 311,131,587,614.74/641,721.65
  6. Step 6: Final answer
    x = 484,838.85

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1.5x scale

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.