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Finding the Fourth Proportional to 675,212.80, 931,791.36 and 373,400.32

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Solution

The fourth proportional to 675,212.80, 931,791.36 and 373,400.32 is: 515,291.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,212.80 : 931,791.36 = 373,400.32 : x
  2. Step 2: Convert to fraction form
    675,212.80/931,791.36 = 373,400.32/x
  3. Step 3: Cross multiply
    675,212.80x = 931,791.36 × 373,400.32
  4. Step 4: Simplify right side
    675,212.80x = 347,931,191,997.24
  5. Step 5: Solve for x
    x = 347,931,191,997.24/675,212.80
  6. Step 6: Final answer
    x = 515,291.17

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1.5x scale

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.