Home / 851,254.20-1,276,881.30-345,814.20

Finding the Fourth Proportional to 851,254.20, 1,276,881.30 and 345,814.20

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Solution

The fourth proportional to 851,254.20, 1,276,881.30 and 345,814.20 is: 518,721.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,254.20 : 1,276,881.30 = 345,814.20 : x
  2. Step 2: Convert to fraction form
    851,254.20/1,276,881.30 = 345,814.20/x
  3. Step 3: Cross multiply
    851,254.20x = 1,276,881.30 × 345,814.20
  4. Step 4: Simplify right side
    851,254.20x = 441,563,685,254.46
  5. Step 5: Solve for x
    x = 441,563,685,254.46/851,254.20
  6. Step 6: Final answer
    x = 518,721.30

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Double scale
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Similar ratio
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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.