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Finding the Fourth Proportional to 676,846.76, 934,074.26 and 386,505.63

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Solution

The fourth proportional to 676,846.76, 934,074.26 and 386,505.63 is: 533,392.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,846.76 : 934,074.26 = 386,505.63 : x
  2. Step 2: Convert to fraction form
    676,846.76/934,074.26 = 386,505.63/x
  3. Step 3: Cross multiply
    676,846.76x = 934,074.26 × 386,505.63
  4. Step 4: Simplify right side
    676,846.76x = 361,024,958,395.56
  5. Step 5: Solve for x
    x = 361,024,958,395.56/676,846.76
  6. Step 6: Final answer
    x = 533,392.46

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Double scale
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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.