Home / 859,720.80-1,289,581.20-786,237.60

Finding the Fourth Proportional to 859,720.80, 1,289,581.20 and 786,237.60

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Solution

The fourth proportional to 859,720.80, 1,289,581.20 and 786,237.60 is: 1,179,356.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,720.80 : 1,289,581.20 = 786,237.60 : x
  2. Step 2: Convert to fraction form
    859,720.80/1,289,581.20 = 786,237.60/x
  3. Step 3: Cross multiply
    859,720.80x = 1,289,581.20 × 786,237.60
  4. Step 4: Simplify right side
    859,720.80x = 1,013,917,227,693.12
  5. Step 5: Solve for x
    x = 1,013,917,227,693.12/859,720.80
  6. Step 6: Final answer
    x = 1,179,356.40

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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.