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Finding the Fourth Proportional to 692,872.48, 956,145.48 and 386,940.40

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Solution

The fourth proportional to 692,872.48, 956,145.48 and 386,940.40 is: 533,967.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,872.48 : 956,145.48 = 386,940.40 : x
  2. Step 2: Convert to fraction form
    692,872.48/956,145.48 = 386,940.40/x
  3. Step 3: Cross multiply
    692,872.48x = 956,145.48 × 386,940.40
  4. Step 4: Simplify right side
    692,872.48x = 369,971,314,489.39
  5. Step 5: Solve for x
    x = 369,971,314,489.39/692,872.48
  6. Step 6: Final answer
    x = 533,967.40

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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.