Home / 828,000.20-1,242,000.30-695,139.96

Finding the Fourth Proportional to 828,000.20, 1,242,000.30 and 695,139.96

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Solution

The fourth proportional to 828,000.20, 1,242,000.30 and 695,139.96 is: 1,042,709.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,000.20 : 1,242,000.30 = 695,139.96 : x
  2. Step 2: Convert to fraction form
    828,000.20/1,242,000.30 = 695,139.96/x
  3. Step 3: Cross multiply
    828,000.20x = 1,242,000.30 × 695,139.96
  4. Step 4: Simplify right side
    828,000.20x = 863,364,038,861.99
  5. Step 5: Solve for x
    x = 863,364,038,861.99/828,000.20
  6. Step 6: Final answer
    x = 1,042,709.94

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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.