Home / 1,312,412.70-1,811,364.39-768,516.74

Finding the Fourth Proportional to 1,312,412.70, 1,811,364.39 and 768,516.74

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Solution

The fourth proportional to 1,312,412.70, 1,811,364.39 and 768,516.74 is: 1,060,690.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,412.70 : 1,811,364.39 = 768,516.74 : x
  2. Step 2: Convert to fraction form
    1,312,412.70/1,811,364.39 = 768,516.74/x
  3. Step 3: Cross multiply
    1,312,412.70x = 1,811,364.39 × 768,516.74
  4. Step 4: Simplify right side
    1,312,412.70x = 1,392,063,846,898.07
  5. Step 5: Solve for x
    x = 1,392,063,846,898.07/1,312,412.70
  6. Step 6: Final answer
    x = 1,060,690.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.