Home / 1,273,256.90-1,910,075.24-420,418.64

Finding the Fourth Proportional to 1,273,256.90, 1,910,075.24 and 420,418.64

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Solution

The fourth proportional to 1,273,256.90, 1,910,075.24 and 420,418.64 is: 630,690.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,273,256.90 : 1,910,075.24 = 420,418.64 : x
  2. Step 2: Convert to fraction form
    1,273,256.90/1,910,075.24 = 420,418.64/x
  3. Step 3: Cross multiply
    1,273,256.90x = 1,910,075.24 × 420,418.64
  4. Step 4: Simplify right side
    1,273,256.90x = 803,031,240,524.71
  5. Step 5: Solve for x
    x = 803,031,240,524.71/1,273,256.90
  6. Step 6: Final answer
    x = 630,690.67

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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.