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Finding the Fourth Proportional to 674,997.81, 931,554.36 and 384,698.22

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Solution

The fourth proportional to 674,997.81, 931,554.36 and 384,698.22 is: 530,916.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,997.81 : 931,554.36 = 384,698.22 : x
  2. Step 2: Convert to fraction form
    674,997.81/931,554.36 = 384,698.22/x
  3. Step 3: Cross multiply
    674,997.81x = 931,554.36 × 384,698.22
  4. Step 4: Simplify right side
    674,997.81x = 358,367,304,125.24
  5. Step 5: Solve for x
    x = 358,367,304,125.24/674,997.81
  6. Step 6: Final answer
    x = 530,916.25

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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.