Home / 642,849.03-964,434.12-453,678.63

Finding the Fourth Proportional to 642,849.03, 964,434.12 and 453,678.63

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Solution

The fourth proportional to 642,849.03, 964,434.12 and 453,678.63 is: 680,631.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,849.03 : 964,434.12 = 453,678.63 : x
  2. Step 2: Convert to fraction form
    642,849.03/964,434.12 = 453,678.63/x
  3. Step 3: Cross multiply
    642,849.03x = 964,434.12 × 453,678.63
  4. Step 4: Simplify right side
    642,849.03x = 437,543,150,286.86
  5. Step 5: Solve for x
    x = 437,543,150,286.86/642,849.03
  6. Step 6: Final answer
    x = 680,631.27

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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.