Home / 1,312,793.40-1,969,190.10-426,329.40

Finding the Fourth Proportional to 1,312,793.40, 1,969,190.10 and 426,329.40

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Solution

The fourth proportional to 1,312,793.40, 1,969,190.10 and 426,329.40 is: 639,494.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,793.40 : 1,969,190.10 = 426,329.40 : x
  2. Step 2: Convert to fraction form
    1,312,793.40/1,969,190.10 = 426,329.40/x
  3. Step 3: Cross multiply
    1,312,793.40x = 1,969,190.10 × 426,329.40
  4. Step 4: Simplify right side
    1,312,793.40x = 839,523,633,818.94
  5. Step 5: Solve for x
    x = 839,523,633,818.94/1,312,793.40
  6. Step 6: Final answer
    x = 639,494.10

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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.