Home / 1,385,045.40-2,077,049.70-486,139.80

Finding the Fourth Proportional to 1,385,045.40, 2,077,049.70 and 486,139.80

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Solution

The fourth proportional to 1,385,045.40, 2,077,049.70 and 486,139.80 is: 729,027.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385,045.40 : 2,077,049.70 = 486,139.80 : x
  2. Step 2: Convert to fraction form
    1,385,045.40/2,077,049.70 = 486,139.80/x
  3. Step 3: Cross multiply
    1,385,045.40x = 2,077,049.70 × 486,139.80
  4. Step 4: Simplify right side
    1,385,045.40x = 1,009,736,525,748.06
  5. Step 5: Solve for x
    x = 1,009,736,525,748.06/1,385,045.40
  6. Step 6: Final answer
    x = 729,027.75

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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.