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Finding the Fourth Proportional to 691,646.54, 954,470.34 and 385,723.26

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Solution

The fourth proportional to 691,646.54, 954,470.34 and 385,723.26 is: 532,297.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,646.54 : 954,470.34 = 385,723.26 : x
  2. Step 2: Convert to fraction form
    691,646.54/954,470.34 = 385,723.26/x
  3. Step 3: Cross multiply
    691,646.54x = 954,470.34 × 385,723.26
  4. Step 4: Simplify right side
    691,646.54x = 368,161,411,118.11
  5. Step 5: Solve for x
    x = 368,161,411,118.11/691,646.54
  6. Step 6: Final answer
    x = 532,297.05

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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.