Home / 768,741.60-1,153,112.34-389,603.28

Finding the Fourth Proportional to 768,741.60, 1,153,112.34 and 389,603.28

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Solution

The fourth proportional to 768,741.60, 1,153,112.34 and 389,603.28 is: 584,404.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,741.60 : 1,153,112.34 = 389,603.28 : x
  2. Step 2: Convert to fraction form
    768,741.60/1,153,112.34 = 389,603.28/x
  3. Step 3: Cross multiply
    768,741.60x = 1,153,112.34 × 389,603.28
  4. Step 4: Simplify right side
    768,741.60x = 449,256,349,872.48
  5. Step 5: Solve for x
    x = 449,256,349,872.48/768,741.60
  6. Step 6: Final answer
    x = 584,404.89

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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.