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Finding the Fourth Proportional to 457,353.57, 630,792.51 and 312,276.05

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Solution

The fourth proportional to 457,353.57, 630,792.51 and 312,276.05 is: 430,698.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,353.57 : 630,792.51 = 312,276.05 : x
  2. Step 2: Convert to fraction form
    457,353.57/630,792.51 = 312,276.05/x
  3. Step 3: Cross multiply
    457,353.57x = 630,792.51 × 312,276.05
  4. Step 4: Simplify right side
    457,353.57x = 196,981,390,238.42
  5. Step 5: Solve for x
    x = 196,981,390,238.42/457,353.57
  6. Step 6: Final answer
    x = 430,698.27

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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.