Home / 887,039.40-1,330,559.10-255,973.80

Finding the Fourth Proportional to 887,039.40, 1,330,559.10 and 255,973.80

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Solution

The fourth proportional to 887,039.40, 1,330,559.10 and 255,973.80 is: 383,960.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,039.40 : 1,330,559.10 = 255,973.80 : x
  2. Step 2: Convert to fraction form
    887,039.40/1,330,559.10 = 255,973.80/x
  3. Step 3: Cross multiply
    887,039.40x = 1,330,559.10 × 255,973.80
  4. Step 4: Simplify right side
    887,039.40x = 340,588,268,951.58
  5. Step 5: Solve for x
    x = 340,588,268,951.58/887,039.40
  6. Step 6: Final answer
    x = 383,960.70

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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.