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Finding the Fourth Proportional to 692,522.88, 955,706.40 and 402,112.68

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Solution

The fourth proportional to 692,522.88, 955,706.40 and 402,112.68 is: 554,929.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,522.88 : 955,706.40 = 402,112.68 : x
  2. Step 2: Convert to fraction form
    692,522.88/955,706.40 = 402,112.68/x
  3. Step 3: Cross multiply
    692,522.88x = 955,706.40 × 402,112.68
  4. Step 4: Simplify right side
    692,522.88x = 384,301,661,797.15
  5. Step 5: Solve for x
    x = 384,301,661,797.15/692,522.88
  6. Step 6: Final answer
    x = 554,929.91

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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.