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Finding the Fourth Proportional to 692,974.68, 956,316.78 and 387,077.88

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Solution

The fourth proportional to 692,974.68, 956,316.78 and 387,077.88 is: 534,174.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,974.68 : 956,316.78 = 387,077.88 : x
  2. Step 2: Convert to fraction form
    692,974.68/956,316.78 = 387,077.88/x
  3. Step 3: Cross multiply
    692,974.68x = 956,316.78 × 387,077.88
  4. Step 4: Simplify right side
    692,974.68x = 370,169,071,810.83
  5. Step 5: Solve for x
    x = 370,169,071,810.83/692,974.68
  6. Step 6: Final answer
    x = 534,174.02

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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.