Home / 642,821.49-964,240.47-443,088.27

Finding the Fourth Proportional to 642,821.49, 964,240.47 and 443,088.27

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Solution

The fourth proportional to 642,821.49, 964,240.47 and 443,088.27 is: 664,638.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,821.49 : 964,240.47 = 443,088.27 : x
  2. Step 2: Convert to fraction form
    642,821.49/964,240.47 = 443,088.27/x
  3. Step 3: Cross multiply
    642,821.49x = 964,240.47 × 443,088.27
  4. Step 4: Simplify right side
    642,821.49x = 427,243,641,716.29
  5. Step 5: Solve for x
    x = 427,243,641,716.29/642,821.49
  6. Step 6: Final answer
    x = 664,638.08

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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.