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Finding the Fourth Proportional to 492,848.51, 679,963.88 and 402,047.51

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Solution

The fourth proportional to 492,848.51, 679,963.88 and 402,047.51 is: 554,689.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,848.51 : 679,963.88 = 402,047.51 : x
  2. Step 2: Convert to fraction form
    492,848.51/679,963.88 = 402,047.51/x
  3. Step 3: Cross multiply
    492,848.51x = 679,963.88 × 402,047.51
  4. Step 4: Simplify right side
    492,848.51x = 273,377,784,843.94
  5. Step 5: Solve for x
    x = 273,377,784,843.94/492,848.51
  6. Step 6: Final answer
    x = 554,689.28

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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.