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Finding the Fourth Proportional to 572,804.20, 860,124.30 and 455,451.40

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Solution

The fourth proportional to 572,804.20, 860,124.30 and 455,451.40 is: 683,907.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,804.20 : 860,124.30 = 455,451.40 : x
  2. Step 2: Convert to fraction form
    572,804.20/860,124.30 = 455,451.40/x
  3. Step 3: Cross multiply
    572,804.20x = 860,124.30 × 455,451.40
  4. Step 4: Simplify right side
    572,804.20x = 391,744,816,609.02
  5. Step 5: Solve for x
    x = 391,744,816,609.02/572,804.20
  6. Step 6: Final answer
    x = 683,907.03

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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.