Home / 642,264.84-886,313.88-355,784.04

Finding the Fourth Proportional to 642,264.84, 886,313.88 and 355,784.04

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Solution

The fourth proportional to 642,264.84, 886,313.88 and 355,784.04 is: 490,975.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,264.84 : 886,313.88 = 355,784.04 : x
  2. Step 2: Convert to fraction form
    642,264.84/886,313.88 = 355,784.04/x
  3. Step 3: Cross multiply
    642,264.84x = 886,313.88 × 355,784.04
  4. Step 4: Simplify right side
    642,264.84x = 315,336,332,934.48
  5. Step 5: Solve for x
    x = 315,336,332,934.48/642,264.84
  6. Step 6: Final answer
    x = 490,975.55

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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.