Home / 1,429,619.20-2,144,428.80-378,995.20

Finding the Fourth Proportional to 1,429,619.20, 2,144,428.80 and 378,995.20

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Solution

The fourth proportional to 1,429,619.20, 2,144,428.80 and 378,995.20 is: 568,492.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,429,619.20 : 2,144,428.80 = 378,995.20 : x
  2. Step 2: Convert to fraction form
    1,429,619.20/2,144,428.80 = 378,995.20/x
  3. Step 3: Cross multiply
    1,429,619.20x = 2,144,428.80 × 378,995.20
  4. Step 4: Simplify right side
    1,429,619.20x = 812,728,221,941.76
  5. Step 5: Solve for x
    x = 812,728,221,941.76/1,429,619.20
  6. Step 6: Final answer
    x = 568,492.80

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1.5x scale

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.