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Finding the Fourth Proportional to 492,160.32, 679,268.16 and 469,721.92

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Solution

The fourth proportional to 492,160.32, 679,268.16 and 469,721.92 is: 648,299.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,160.32 : 679,268.16 = 469,721.92 : x
  2. Step 2: Convert to fraction form
    492,160.32/679,268.16 = 469,721.92/x
  3. Step 3: Cross multiply
    492,160.32x = 679,268.16 × 469,721.92
  4. Step 4: Simplify right side
    492,160.32x = 319,067,144,310.07
  5. Step 5: Solve for x
    x = 319,067,144,310.07/492,160.32
  6. Step 6: Final answer
    x = 648,299.21

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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.