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Finding the Fourth Proportional to 572,771.60, 858,379.80 and 406,365.20

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Solution

The fourth proportional to 572,771.60, 858,379.80 and 406,365.20 is: 608,996.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,771.60 : 858,379.80 = 406,365.20 : x
  2. Step 2: Convert to fraction form
    572,771.60/858,379.80 = 406,365.20/x
  3. Step 3: Cross multiply
    572,771.60x = 858,379.80 × 406,365.20
  4. Step 4: Simplify right side
    572,771.60x = 348,815,679,102.96
  5. Step 5: Solve for x
    x = 348,815,679,102.96/572,771.60
  6. Step 6: Final answer
    x = 608,996.11

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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.