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Finding the Fourth Proportional to 676,534.45, 933,617.92 and 370,621.90

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Solution

The fourth proportional to 676,534.45, 933,617.92 and 370,621.90 is: 511,458.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,534.45 : 933,617.92 = 370,621.90 : x
  2. Step 2: Convert to fraction form
    676,534.45/933,617.92 = 370,621.90/x
  3. Step 3: Cross multiply
    676,534.45x = 933,617.92 × 370,621.90
  4. Step 4: Simplify right side
    676,534.45x = 346,019,251,988.01
  5. Step 5: Solve for x
    x = 346,019,251,988.01/676,534.45
  6. Step 6: Final answer
    x = 511,458.43

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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.