Home / 491,413.59-678,038.55-276,475.23

Finding the Fourth Proportional to 491,413.59, 678,038.55 and 276,475.23

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Solution

The fourth proportional to 491,413.59, 678,038.55 and 276,475.23 is: 381,472.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,413.59 : 678,038.55 = 276,475.23 : x
  2. Step 2: Convert to fraction form
    491,413.59/678,038.55 = 276,475.23/x
  3. Step 3: Cross multiply
    491,413.59x = 678,038.55 × 276,475.23
  4. Step 4: Simplify right side
    491,413.59x = 187,460,862,677.74
  5. Step 5: Solve for x
    x = 187,460,862,677.74/491,413.59
  6. Step 6: Final answer
    x = 381,472.69

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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.