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Finding the Fourth Proportional to 687,003.52, 948,083.52 and 385,191.04

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Solution

The fourth proportional to 687,003.52, 948,083.52 and 385,191.04 is: 531,574.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,003.52 : 948,083.52 = 385,191.04 : x
  2. Step 2: Convert to fraction form
    687,003.52/948,083.52 = 385,191.04/x
  3. Step 3: Cross multiply
    687,003.52x = 948,083.52 × 385,191.04
  4. Step 4: Simplify right side
    687,003.52x = 365,193,277,075.66
  5. Step 5: Solve for x
    x = 365,193,277,075.66/687,003.52
  6. Step 6: Final answer
    x = 531,574.10

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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.