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Finding the Fourth Proportional to 713,796.42, 985,102.26 and 391,569.32

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Solution

The fourth proportional to 713,796.42, 985,102.26 and 391,569.32 is: 540,400.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,796.42 : 985,102.26 = 391,569.32 : x
  2. Step 2: Convert to fraction form
    713,796.42/985,102.26 = 391,569.32/x
  3. Step 3: Cross multiply
    713,796.42x = 985,102.26 × 391,569.32
  4. Step 4: Simplify right side
    713,796.42x = 385,735,822,078.66
  5. Step 5: Solve for x
    x = 385,735,822,078.66/713,796.42
  6. Step 6: Final answer
    x = 540,400.33

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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.