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Finding the Fourth Proportional to 1,312,758.32, 1,973,247.84 and 866,347.88

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Solution

The fourth proportional to 1,312,758.32, 1,973,247.84 and 866,347.88 is: 1,302,234.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,758.32 : 1,973,247.84 = 866,347.88 : x
  2. Step 2: Convert to fraction form
    1,312,758.32/1,973,247.84 = 866,347.88/x
  3. Step 3: Cross multiply
    1,312,758.32x = 1,973,247.84 × 866,347.88
  4. Step 4: Simplify right side
    1,312,758.32x = 1,709,519,082,898.58
  5. Step 5: Solve for x
    x = 1,709,519,082,898.58/1,312,758.32
  6. Step 6: Final answer
    x = 1,302,234.43

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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.