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Finding the Fourth Proportional to 613,544.88, 919,092 and 487,398.72

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Solution

The fourth proportional to 613,544.88, 919,092 and 487,398.72 is: 730,124.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,544.88 : 919,092 = 487,398.72 : x
  2. Step 2: Convert to fraction form
    613,544.88/919,092 = 487,398.72/x
  3. Step 3: Cross multiply
    613,544.88x = 919,092 × 487,398.72
  4. Step 4: Simplify right side
    613,544.88x = 447,964,264,362.24
  5. Step 5: Solve for x
    x = 447,964,264,362.24/613,544.88
  6. Step 6: Final answer
    x = 730,124.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.