Home / 859,810.10-1,289,715.15-661,133.30

Finding the Fourth Proportional to 859,810.10, 1,289,715.15 and 661,133.30

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Solution

The fourth proportional to 859,810.10, 1,289,715.15 and 661,133.30 is: 991,699.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,810.10 : 1,289,715.15 = 661,133.30 : x
  2. Step 2: Convert to fraction form
    859,810.10/1,289,715.15 = 661,133.30/x
  3. Step 3: Cross multiply
    859,810.10x = 1,289,715.15 × 661,133.30
  4. Step 4: Simplify right side
    859,810.10x = 852,673,633,179.50
  5. Step 5: Solve for x
    x = 852,673,633,179.50/859,810.10
  6. Step 6: Final answer
    x = 991,699.95

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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.