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Finding the Fourth Proportional to 859,627.80, 1,290,818.70 and 683,598.60

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Solution

The fourth proportional to 859,627.80, 1,290,818.70 and 683,598.60 is: 1,026,492.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,627.80 : 1,290,818.70 = 683,598.60 : x
  2. Step 2: Convert to fraction form
    859,627.80/1,290,818.70 = 683,598.60/x
  3. Step 3: Cross multiply
    859,627.80x = 1,290,818.70 × 683,598.60
  4. Step 4: Simplify right side
    859,627.80x = 882,401,856,173.82
  5. Step 5: Solve for x
    x = 882,401,856,173.82/859,627.80
  6. Step 6: Final answer
    x = 1,026,492.93

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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.