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Finding the Fourth Proportional to 674,644.64, 931,001.04 and 372,832.16

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Solution

The fourth proportional to 674,644.64, 931,001.04 and 372,832.16 is: 514,503.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,644.64 : 931,001.04 = 372,832.16 : x
  2. Step 2: Convert to fraction form
    674,644.64/931,001.04 = 372,832.16/x
  3. Step 3: Cross multiply
    674,644.64x = 931,001.04 × 372,832.16
  4. Step 4: Simplify right side
    674,644.64x = 347,107,128,705.45
  5. Step 5: Solve for x
    x = 347,107,128,705.45/674,644.64
  6. Step 6: Final answer
    x = 514,503.65

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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.