Home / 641,780.16-885,622.94-351,336.04

Finding the Fourth Proportional to 641,780.16, 885,622.94 and 351,336.04

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Solution

The fourth proportional to 641,780.16, 885,622.94 and 351,336.04 is: 484,825.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,780.16 : 885,622.94 = 351,336.04 : x
  2. Step 2: Convert to fraction form
    641,780.16/885,622.94 = 351,336.04/x
  3. Step 3: Cross multiply
    641,780.16x = 885,622.94 × 351,336.04
  4. Step 4: Simplify right side
    641,780.16x = 311,151,254,019.53
  5. Step 5: Solve for x
    x = 311,151,254,019.53/641,780.16
  6. Step 6: Final answer
    x = 484,825.30

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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.