Home / 1,186,339.50-1,779,141.03-428,082.57

Finding the Fourth Proportional to 1,186,339.50, 1,779,141.03 and 428,082.57

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Solution

The fourth proportional to 1,186,339.50, 1,779,141.03 and 428,082.57 is: 641,990.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,339.50 : 1,779,141.03 = 428,082.57 : x
  2. Step 2: Convert to fraction form
    1,186,339.50/1,779,141.03 = 428,082.57/x
  3. Step 3: Cross multiply
    1,186,339.50x = 1,779,141.03 × 428,082.57
  4. Step 4: Simplify right side
    1,186,339.50x = 761,619,264,514.85
  5. Step 5: Solve for x
    x = 761,619,264,514.85/1,186,339.50
  6. Step 6: Final answer
    x = 641,990.99

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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.