Home / 859,579.12-1,288,923.72-385,856.56

Finding the Fourth Proportional to 859,579.12, 1,288,923.72 and 385,856.56

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Solution

The fourth proportional to 859,579.12, 1,288,923.72 and 385,856.56 is: 578,585.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,579.12 : 1,288,923.72 = 385,856.56 : x
  2. Step 2: Convert to fraction form
    859,579.12/1,288,923.72 = 385,856.56/x
  3. Step 3: Cross multiply
    859,579.12x = 1,288,923.72 × 385,856.56
  4. Step 4: Simplify right side
    859,579.12x = 497,339,672,701.60
  5. Step 5: Solve for x
    x = 497,339,672,701.60/859,579.12
  6. Step 6: Final answer
    x = 578,585.10

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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.