Home / 745,830.78-1,118,908.16-272,515.38

Finding the Fourth Proportional to 745,830.78, 1,118,908.16 and 272,515.38

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Solution

The fourth proportional to 745,830.78, 1,118,908.16 and 272,515.38 is: 408,832.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,830.78 : 1,118,908.16 = 272,515.38 : x
  2. Step 2: Convert to fraction form
    745,830.78/1,118,908.16 = 272,515.38/x
  3. Step 3: Cross multiply
    745,830.78x = 1,118,908.16 × 272,515.38
  4. Step 4: Simplify right side
    745,830.78x = 304,919,682,407.50
  5. Step 5: Solve for x
    x = 304,919,682,407.50/745,830.78
  6. Step 6: Final answer
    x = 408,832.26

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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.