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Finding the Fourth Proportional to 671,455.21, 927,440.60 and 487,400.22

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Solution

The fourth proportional to 671,455.21, 927,440.60 and 487,400.22 is: 673,216.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,455.21 : 927,440.60 = 487,400.22 : x
  2. Step 2: Convert to fraction form
    671,455.21/927,440.60 = 487,400.22/x
  3. Step 3: Cross multiply
    671,455.21x = 927,440.60 × 487,400.22
  4. Step 4: Simplify right side
    671,455.21x = 452,034,752,476.93
  5. Step 5: Solve for x
    x = 452,034,752,476.93/671,455.21
  6. Step 6: Final answer
    x = 673,216.54

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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.