Home / 1,385,287.64-2,078,139.26-486,571

Finding the Fourth Proportional to 1,385,287.64, 2,078,139.26 and 486,571

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Solution

The fourth proportional to 1,385,287.64, 2,078,139.26 and 486,571 is: 729,929.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385,287.64 : 2,078,139.26 = 486,571 : x
  2. Step 2: Convert to fraction form
    1,385,287.64/2,078,139.26 = 486,571/x
  3. Step 3: Cross multiply
    1,385,287.64x = 2,078,139.26 × 486,571
  4. Step 4: Simplify right side
    1,385,287.64x = 1,011,162,297,877.46
  5. Step 5: Solve for x
    x = 1,011,162,297,877.46/1,385,287.64
  6. Step 6: Final answer
    x = 729,929.49

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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.