Home / 986,745.28-1,480,708.40-425,779.76

Finding the Fourth Proportional to 986,745.28, 1,480,708.40 and 425,779.76

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Solution

The fourth proportional to 986,745.28, 1,480,708.40 and 425,779.76 is: 638,924.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,745.28 : 1,480,708.40 = 425,779.76 : x
  2. Step 2: Convert to fraction form
    986,745.28/1,480,708.40 = 425,779.76/x
  3. Step 3: Cross multiply
    986,745.28x = 1,480,708.40 × 425,779.76
  4. Step 4: Simplify right side
    986,745.28x = 630,455,667,181.98
  5. Step 5: Solve for x
    x = 630,455,667,181.98/986,745.28
  6. Step 6: Final answer
    x = 638,924.43

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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.