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Finding the Fourth Proportional to 526,052.40, 788,495.40 and 289,564.80

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Solution

The fourth proportional to 526,052.40, 788,495.40 and 289,564.80 is: 434,026.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,052.40 : 788,495.40 = 289,564.80 : x
  2. Step 2: Convert to fraction form
    526,052.40/788,495.40 = 289,564.80/x
  3. Step 3: Cross multiply
    526,052.40x = 788,495.40 × 289,564.80
  4. Step 4: Simplify right side
    526,052.40x = 228,320,512,801.92
  5. Step 5: Solve for x
    x = 228,320,512,801.92/526,052.40
  6. Step 6: Final answer
    x = 434,026.18

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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.