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Finding the Fourth Proportional to 677,435.52, 934,938 and 391,032.48

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Solution

The fourth proportional to 677,435.52, 934,938 and 391,032.48 is: 539,669.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,435.52 : 934,938 = 391,032.48 : x
  2. Step 2: Convert to fraction form
    677,435.52/934,938 = 391,032.48/x
  3. Step 3: Cross multiply
    677,435.52x = 934,938 × 391,032.48
  4. Step 4: Simplify right side
    677,435.52x = 365,591,124,786.24
  5. Step 5: Solve for x
    x = 365,591,124,786.24/677,435.52
  6. Step 6: Final answer
    x = 539,669.26

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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.