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Finding the Fourth Proportional to 704,787.22, 972,465.66 and 428,960.32

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Solution

The fourth proportional to 704,787.22, 972,465.66 and 428,960.32 is: 591,879.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,787.22 : 972,465.66 = 428,960.32 : x
  2. Step 2: Convert to fraction form
    704,787.22/972,465.66 = 428,960.32/x
  3. Step 3: Cross multiply
    704,787.22x = 972,465.66 × 428,960.32
  4. Step 4: Simplify right side
    704,787.22x = 417,149,180,702.61
  5. Step 5: Solve for x
    x = 417,149,180,702.61/704,787.22
  6. Step 6: Final answer
    x = 591,879.60

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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.