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Finding the Fourth Proportional to 672,214.89, 927,680 and 366,316.47

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Solution

The fourth proportional to 672,214.89, 927,680 and 366,316.47 is: 505,529.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,214.89 : 927,680 = 366,316.47 : x
  2. Step 2: Convert to fraction form
    672,214.89/927,680 = 366,316.47/x
  3. Step 3: Cross multiply
    672,214.89x = 927,680 × 366,316.47
  4. Step 4: Simplify right side
    672,214.89x = 339,824,462,889.60
  5. Step 5: Solve for x
    x = 339,824,462,889.60/672,214.89
  6. Step 6: Final answer
    x = 505,529.51

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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.