Home / 753,012.78-1,129,519.58-472,726.86

Finding the Fourth Proportional to 753,012.78, 1,129,519.58 and 472,726.86

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Solution

The fourth proportional to 753,012.78, 1,129,519.58 and 472,726.86 is: 709,090.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,012.78 : 1,129,519.58 = 472,726.86 : x
  2. Step 2: Convert to fraction form
    753,012.78/1,129,519.58 = 472,726.86/x
  3. Step 3: Cross multiply
    753,012.78x = 1,129,519.58 × 472,726.86
  4. Step 4: Simplify right side
    753,012.78x = 533,954,241,998.29
  5. Step 5: Solve for x
    x = 533,954,241,998.29/753,012.78
  6. Step 6: Final answer
    x = 709,090.54

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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.