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Finding the Fourth Proportional to 492,846.51, 679,961.12 and 402,045.51

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Solution

The fourth proportional to 492,846.51, 679,961.12 and 402,045.51 is: 554,686.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,846.51 : 679,961.12 = 402,045.51 : x
  2. Step 2: Convert to fraction form
    492,846.51/679,961.12 = 402,045.51/x
  3. Step 3: Cross multiply
    492,846.51x = 679,961.12 × 402,045.51
  4. Step 4: Simplify right side
    492,846.51x = 273,375,315,270.57
  5. Step 5: Solve for x
    x = 273,375,315,270.57/492,846.51
  6. Step 6: Final answer
    x = 554,686.52

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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.