Home / 1,320,616.92-1,818,370.74-1,031,396.76

Finding the Fourth Proportional to 1,320,616.92, 1,818,370.74 and 1,031,396.76

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Solution

The fourth proportional to 1,320,616.92, 1,818,370.74 and 1,031,396.76 is: 1,420,140.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,616.92 : 1,818,370.74 = 1,031,396.76 : x
  2. Step 2: Convert to fraction form
    1,320,616.92/1,818,370.74 = 1,031,396.76/x
  3. Step 3: Cross multiply
    1,320,616.92x = 1,818,370.74 × 1,031,396.76
  4. Step 4: Simplify right side
    1,320,616.92x = 1,875,461,689,714.80
  5. Step 5: Solve for x
    x = 1,875,461,689,714.80/1,320,616.92
  6. Step 6: Final answer
    x = 1,420,140.59

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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.