Home / 859,059.30-1,288,200.15-385,500.90

Finding the Fourth Proportional to 859,059.30, 1,288,200.15 and 385,500.90

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Solution

The fourth proportional to 859,059.30, 1,288,200.15 and 385,500.90 is: 578,076.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,059.30 : 1,288,200.15 = 385,500.90 : x
  2. Step 2: Convert to fraction form
    859,059.30/1,288,200.15 = 385,500.90/x
  3. Step 3: Cross multiply
    859,059.30x = 1,288,200.15 × 385,500.90
  4. Step 4: Simplify right side
    859,059.30x = 496,602,317,205.14
  5. Step 5: Solve for x
    x = 496,602,317,205.14/859,059.30
  6. Step 6: Final answer
    x = 578,076.88

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1.5x scale

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.