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Finding the Fourth Proportional to 683,652.64, 943,435.28 and 397,340.32

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Solution

The fourth proportional to 683,652.64, 943,435.28 and 397,340.32 is: 548,326.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,652.64 : 943,435.28 = 397,340.32 : x
  2. Step 2: Convert to fraction form
    683,652.64/943,435.28 = 397,340.32/x
  3. Step 3: Cross multiply
    683,652.64x = 943,435.28 × 397,340.32
  4. Step 4: Simplify right side
    683,652.64x = 374,864,876,054.49
  5. Step 5: Solve for x
    x = 374,864,876,054.49/683,652.64
  6. Step 6: Final answer
    x = 548,326.52

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Double scale
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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.