Home / 1,216,818.72-1,679,434.44-781,779.88

Finding the Fourth Proportional to 1,216,818.72, 1,679,434.44 and 781,779.88

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Solution

The fourth proportional to 1,216,818.72, 1,679,434.44 and 781,779.88 is: 1,079,000.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,818.72 : 1,679,434.44 = 781,779.88 : x
  2. Step 2: Convert to fraction form
    1,216,818.72/1,679,434.44 = 781,779.88/x
  3. Step 3: Cross multiply
    1,216,818.72x = 1,679,434.44 × 781,779.88
  4. Step 4: Simplify right side
    1,216,818.72x = 1,312,948,054,971.07
  5. Step 5: Solve for x
    x = 1,312,948,054,971.07/1,216,818.72
  6. Step 6: Final answer
    x = 1,079,000.54

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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.