Home / 457,455.71-631,215.39-287,569.55

Finding the Fourth Proportional to 457,455.71, 631,215.39 and 287,569.55

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Solution

The fourth proportional to 457,455.71, 631,215.39 and 287,569.55 is: 396,799.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,455.71 : 631,215.39 = 287,569.55 : x
  2. Step 2: Convert to fraction form
    457,455.71/631,215.39 = 287,569.55/x
  3. Step 3: Cross multiply
    457,455.71x = 631,215.39 × 287,569.55
  4. Step 4: Simplify right side
    457,455.71x = 181,518,325,655.38
  5. Step 5: Solve for x
    x = 181,518,325,655.38/457,455.71
  6. Step 6: Final answer
    x = 396,799.78

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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.