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Finding the Fourth Proportional to 457,125.95, 630,838.45 and 275,802.84

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Solution

The fourth proportional to 457,125.95, 630,838.45 and 275,802.84 is: 380,610.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,125.95 : 630,838.45 = 275,802.84 : x
  2. Step 2: Convert to fraction form
    457,125.95/630,838.45 = 275,802.84/x
  3. Step 3: Cross multiply
    457,125.95x = 630,838.45 × 275,802.84
  4. Step 4: Simplify right side
    457,125.95x = 173,987,034,884.56
  5. Step 5: Solve for x
    x = 173,987,034,884.56/457,125.95
  6. Step 6: Final answer
    x = 380,610.72

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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.