Home / 648,788.40-972,016.20-529,815.60

Finding the Fourth Proportional to 648,788.40, 972,016.20 and 529,815.60

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Solution

The fourth proportional to 648,788.40, 972,016.20 and 529,815.60 is: 793,770.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,788.40 : 972,016.20 = 529,815.60 : x
  2. Step 2: Convert to fraction form
    648,788.40/972,016.20 = 529,815.60/x
  3. Step 3: Cross multiply
    648,788.40x = 972,016.20 × 529,815.60
  4. Step 4: Simplify right side
    648,788.40x = 514,989,346,212.72
  5. Step 5: Solve for x
    x = 514,989,346,212.72/648,788.40
  6. Step 6: Final answer
    x = 793,770.89

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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.