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Finding the Fourth Proportional to 492,847.51, 679,962.50 and 402,046.51

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Solution

The fourth proportional to 492,847.51, 679,962.50 and 402,046.51 is: 554,687.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,847.51 : 679,962.50 = 402,046.51 : x
  2. Step 2: Convert to fraction form
    492,847.51/679,962.50 = 402,046.51/x
  3. Step 3: Cross multiply
    492,847.51x = 679,962.50 × 402,046.51
  4. Step 4: Simplify right side
    492,847.51x = 273,376,550,055.88
  5. Step 5: Solve for x
    x = 273,376,550,055.88/492,847.51
  6. Step 6: Final answer
    x = 554,687.90

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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.