Home / 788,000.10-1,182,000.15-219,380.10

Finding the Fourth Proportional to 788,000.10, 1,182,000.15 and 219,380.10

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Solution

The fourth proportional to 788,000.10, 1,182,000.15 and 219,380.10 is: 329,070.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,000.10 : 1,182,000.15 = 219,380.10 : x
  2. Step 2: Convert to fraction form
    788,000.10/1,182,000.15 = 219,380.10/x
  3. Step 3: Cross multiply
    788,000.10x = 1,182,000.15 × 219,380.10
  4. Step 4: Simplify right side
    788,000.10x = 259,307,311,107.02
  5. Step 5: Solve for x
    x = 259,307,311,107.02/788,000.10
  6. Step 6: Final answer
    x = 329,070.15

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Double scale
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Similar ratio
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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.