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Finding the Fourth Proportional to 864,000.60, 1,296,000.90 and 850,003.80

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Solution

The fourth proportional to 864,000.60, 1,296,000.90 and 850,003.80 is: 1,275,005.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,000.60 : 1,296,000.90 = 850,003.80 : x
  2. Step 2: Convert to fraction form
    864,000.60/1,296,000.90 = 850,003.80/x
  3. Step 3: Cross multiply
    864,000.60x = 1,296,000.90 × 850,003.80
  4. Step 4: Simplify right side
    864,000.60x = 1,101,605,689,803.42
  5. Step 5: Solve for x
    x = 1,101,605,689,803.42/864,000.60
  6. Step 6: Final answer
    x = 1,275,005.70

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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.