Home / 1,385,288.64-2,078,140.76-486,572

Finding the Fourth Proportional to 1,385,288.64, 2,078,140.76 and 486,572

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Solution

The fourth proportional to 1,385,288.64, 2,078,140.76 and 486,572 is: 729,930.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385,288.64 : 2,078,140.76 = 486,572 : x
  2. Step 2: Convert to fraction form
    1,385,288.64/2,078,140.76 = 486,572/x
  3. Step 3: Cross multiply
    1,385,288.64x = 2,078,140.76 × 486,572
  4. Step 4: Simplify right side
    1,385,288.64x = 1,011,165,105,874.72
  5. Step 5: Solve for x
    x = 1,011,165,105,874.72/1,385,288.64
  6. Step 6: Final answer
    x = 729,930.99

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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.