Home / 915,755.48-1,263,742.57-507,919.78

Finding the Fourth Proportional to 915,755.48, 1,263,742.57 and 507,919.78

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Solution

The fourth proportional to 915,755.48, 1,263,742.57 and 507,919.78 is: 700,929.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,755.48 : 1,263,742.57 = 507,919.78 : x
  2. Step 2: Convert to fraction form
    915,755.48/1,263,742.57 = 507,919.78/x
  3. Step 3: Cross multiply
    915,755.48x = 1,263,742.57 × 507,919.78
  4. Step 4: Simplify right side
    915,755.48x = 641,879,841,808.54
  5. Step 5: Solve for x
    x = 641,879,841,808.54/915,755.48
  6. Step 6: Final answer
    x = 700,929.29

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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.