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Finding the Fourth Proportional to 457,011.42, 631,879.68 and 400,260.12

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Solution

The fourth proportional to 457,011.42, 631,879.68 and 400,260.12 is: 553,413.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,011.42 : 631,879.68 = 400,260.12 : x
  2. Step 2: Convert to fraction form
    457,011.42/631,879.68 = 400,260.12/x
  3. Step 3: Cross multiply
    457,011.42x = 631,879.68 × 400,260.12
  4. Step 4: Simplify right side
    457,011.42x = 252,916,236,542.36
  5. Step 5: Solve for x
    x = 252,916,236,542.36/457,011.42
  6. Step 6: Final answer
    x = 553,413.38

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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.