Home / 1,273,256.15-1,910,074.12-420,417.89

Finding the Fourth Proportional to 1,273,256.15, 1,910,074.12 and 420,417.89

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Solution

The fourth proportional to 1,273,256.15, 1,910,074.12 and 420,417.89 is: 630,689.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,273,256.15 : 1,910,074.12 = 420,417.89 : x
  2. Step 2: Convert to fraction form
    1,273,256.15/1,910,074.12 = 420,417.89/x
  3. Step 3: Cross multiply
    1,273,256.15x = 1,910,074.12 × 420,417.89
  4. Step 4: Simplify right side
    1,273,256.15x = 803,029,334,998.15
  5. Step 5: Solve for x
    x = 803,029,334,998.15/1,273,256.15
  6. Step 6: Final answer
    x = 630,689.54

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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.