Home / 1,086,865.40-1,630,370.10-288,135.80

Finding the Fourth Proportional to 1,086,865.40, 1,630,370.10 and 288,135.80

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Solution

The fourth proportional to 1,086,865.40, 1,630,370.10 and 288,135.80 is: 432,222.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086,865.40 : 1,630,370.10 = 288,135.80 : x
  2. Step 2: Convert to fraction form
    1,086,865.40/1,630,370.10 = 288,135.80/x
  3. Step 3: Cross multiply
    1,086,865.40x = 1,630,370.10 × 288,135.80
  4. Step 4: Simplify right side
    1,086,865.40x = 469,767,993,059.58
  5. Step 5: Solve for x
    x = 469,767,993,059.58/1,086,865.40
  6. Step 6: Final answer
    x = 432,222.79

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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.