Home / 821,780.36-1,230,455.46-536,765.12

Finding the Fourth Proportional to 821,780.36, 1,230,455.46 and 536,765.12

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Solution

The fourth proportional to 821,780.36, 1,230,455.46 and 536,765.12 is: 803,700.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,780.36 : 1,230,455.46 = 536,765.12 : x
  2. Step 2: Convert to fraction form
    821,780.36/1,230,455.46 = 536,765.12/x
  3. Step 3: Cross multiply
    821,780.36x = 1,230,455.46 × 536,765.12
  4. Step 4: Simplify right side
    821,780.36x = 660,465,572,641.56
  5. Step 5: Solve for x
    x = 660,465,572,641.56/821,780.36
  6. Step 6: Final answer
    x = 803,700.85

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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.