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Finding the Fourth Proportional to 572,996.70, 860,413.05 and 455,643.90

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Solution

The fourth proportional to 572,996.70, 860,413.05 and 455,643.90 is: 684,195.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,996.70 : 860,413.05 = 455,643.90 : x
  2. Step 2: Convert to fraction form
    572,996.70/860,413.05 = 455,643.90/x
  3. Step 3: Cross multiply
    572,996.70x = 860,413.05 × 455,643.90
  4. Step 4: Simplify right side
    572,996.70x = 392,041,957,712.90
  5. Step 5: Solve for x
    x = 392,041,957,712.90/572,996.70
  6. Step 6: Final answer
    x = 684,195.84

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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.