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Finding the Fourth Proportional to 674,804.12, 931,229.54 and 368,881.78

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Solution

The fourth proportional to 674,804.12, 931,229.54 and 368,881.78 is: 509,056.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,804.12 : 931,229.54 = 368,881.78 : x
  2. Step 2: Convert to fraction form
    674,804.12/931,229.54 = 368,881.78/x
  3. Step 3: Cross multiply
    674,804.12x = 931,229.54 × 368,881.78
  4. Step 4: Simplify right side
    674,804.12x = 343,513,608,897.91
  5. Step 5: Solve for x
    x = 343,513,608,897.91/674,804.12
  6. Step 6: Final answer
    x = 509,056.78

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1.5x scale

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.