Home / 718,814.40-1,078,221.60-245,428.80

Finding the Fourth Proportional to 718,814.40, 1,078,221.60 and 245,428.80

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Solution

The fourth proportional to 718,814.40, 1,078,221.60 and 245,428.80 is: 368,143.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,814.40 : 1,078,221.60 = 245,428.80 : x
  2. Step 2: Convert to fraction form
    718,814.40/1,078,221.60 = 245,428.80/x
  3. Step 3: Cross multiply
    718,814.40x = 1,078,221.60 × 245,428.80
  4. Step 4: Simplify right side
    718,814.40x = 264,626,633,422.08
  5. Step 5: Solve for x
    x = 264,626,633,422.08/718,814.40
  6. Step 6: Final answer
    x = 368,143.20

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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.