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Finding the Fourth Proportional to 526,630.40, 788,609.10 and 289,705.40

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Solution

The fourth proportional to 526,630.40, 788,609.10 and 289,705.40 is: 433,822.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,630.40 : 788,609.10 = 289,705.40 : x
  2. Step 2: Convert to fraction form
    526,630.40/788,609.10 = 289,705.40/x
  3. Step 3: Cross multiply
    526,630.40x = 788,609.10 × 289,705.40
  4. Step 4: Simplify right side
    526,630.40x = 228,464,314,759.14
  5. Step 5: Solve for x
    x = 228,464,314,759.14/526,630.40
  6. Step 6: Final answer
    x = 433,822.88

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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.