Home / 677,641.86-1,016,135.82-393,403.98

Finding the Fourth Proportional to 677,641.86, 1,016,135.82 and 393,403.98

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Solution

The fourth proportional to 677,641.86, 1,016,135.82 and 393,403.98 is: 589,916.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,641.86 : 1,016,135.82 = 393,403.98 : x
  2. Step 2: Convert to fraction form
    677,641.86/1,016,135.82 = 393,403.98/x
  3. Step 3: Cross multiply
    677,641.86x = 1,016,135.82 × 393,403.98
  4. Step 4: Simplify right side
    677,641.86x = 399,751,875,808.56
  5. Step 5: Solve for x
    x = 399,751,875,808.56/677,641.86
  6. Step 6: Final answer
    x = 589,916.15

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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.