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Finding the Fourth Proportional to 572,867.70, 860,219.55 and 455,514.90

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Solution

The fourth proportional to 572,867.70, 860,219.55 and 455,514.90 is: 684,002.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,867.70 : 860,219.55 = 455,514.90 : x
  2. Step 2: Convert to fraction form
    572,867.70/860,219.55 = 455,514.90/x
  3. Step 3: Cross multiply
    572,867.70x = 860,219.55 × 455,514.90
  4. Step 4: Simplify right side
    572,867.70x = 391,842,822,296.30
  5. Step 5: Solve for x
    x = 391,842,822,296.30/572,867.70
  6. Step 6: Final answer
    x = 684,002.30

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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.