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Finding the Fourth Proportional to 687,553, 948,804.96 and 381,628.56

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Solution

The fourth proportional to 687,553, 948,804.96 and 381,628.56 is: 526,637.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,553 : 948,804.96 = 381,628.56 : x
  2. Step 2: Convert to fraction form
    687,553/948,804.96 = 381,628.56/x
  3. Step 3: Cross multiply
    687,553x = 948,804.96 × 381,628.56
  4. Step 4: Simplify right side
    687,553x = 362,091,070,605.66
  5. Step 5: Solve for x
    x = 362,091,070,605.66/687,553
  6. Step 6: Final answer
    x = 526,637.32

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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.