Home / 678,306.31-1,017,603.47-257,572.87

Finding the Fourth Proportional to 678,306.31, 1,017,603.47 and 257,572.87

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Solution

The fourth proportional to 678,306.31, 1,017,603.47 and 257,572.87 is: 386,413.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,306.31 : 1,017,603.47 = 257,572.87 : x
  2. Step 2: Convert to fraction form
    678,306.31/1,017,603.47 = 257,572.87/x
  3. Step 3: Cross multiply
    678,306.31x = 1,017,603.47 × 257,572.87
  4. Step 4: Simplify right side
    678,306.31x = 262,107,046,289.86
  5. Step 5: Solve for x
    x = 262,107,046,289.86/678,306.31
  6. Step 6: Final answer
    x = 386,413.99

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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.