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Finding the Fourth Proportional to 490,316.36, 675,072.43 and 418,407.80

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Solution

The fourth proportional to 490,316.36, 675,072.43 and 418,407.80 is: 576,068.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,316.36 : 675,072.43 = 418,407.80 : x
  2. Step 2: Convert to fraction form
    490,316.36/675,072.43 = 418,407.80/x
  3. Step 3: Cross multiply
    490,316.36x = 675,072.43 × 418,407.80
  4. Step 4: Simplify right side
    490,316.36x = 282,455,565,855.57
  5. Step 5: Solve for x
    x = 282,455,565,855.57/490,316.36
  6. Step 6: Final answer
    x = 576,068.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.