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Finding the Fourth Proportional to 526,012.80, 788,630.40 and 289,622.40

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Solution

The fourth proportional to 526,012.80, 788,630.40 and 289,622.40 is: 434,219.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,012.80 : 788,630.40 = 289,622.40 : x
  2. Step 2: Convert to fraction form
    526,012.80/788,630.40 = 289,622.40/x
  3. Step 3: Cross multiply
    526,012.80x = 788,630.40 × 289,622.40
  4. Step 4: Simplify right side
    526,012.80x = 228,405,029,160.96
  5. Step 5: Solve for x
    x = 228,405,029,160.96/526,012.80
  6. Step 6: Final answer
    x = 434,219.53

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1.5x scale

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.