Home / 851,031.40-1,276,838.70-378,056.20

Finding the Fourth Proportional to 851,031.40, 1,276,838.70 and 378,056.20

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Solution

The fourth proportional to 851,031.40, 1,276,838.70 and 378,056.20 is: 567,213.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,031.40 : 1,276,838.70 = 378,056.20 : x
  2. Step 2: Convert to fraction form
    851,031.40/1,276,838.70 = 378,056.20/x
  3. Step 3: Cross multiply
    851,031.40x = 1,276,838.70 × 378,056.20
  4. Step 4: Simplify right side
    851,031.40x = 482,716,786,934.94
  5. Step 5: Solve for x
    x = 482,716,786,934.94/851,031.40
  6. Step 6: Final answer
    x = 567,213.84

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Double scale
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1.5x scale

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.