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Finding the Fourth Proportional to 674,597.34, 931,109.67 and 384,380.01

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Solution

The fourth proportional to 674,597.34, 931,109.67 and 384,380.01 is: 530,538.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,597.34 : 931,109.67 = 384,380.01 : x
  2. Step 2: Convert to fraction form
    674,597.34/931,109.67 = 384,380.01/x
  3. Step 3: Cross multiply
    674,597.34x = 931,109.67 × 384,380.01
  4. Step 4: Simplify right side
    674,597.34x = 357,899,944,265.70
  5. Step 5: Solve for x
    x = 357,899,944,265.70/674,597.34
  6. Step 6: Final answer
    x = 530,538.62

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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.