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Finding the Fourth Proportional to 645,759.19, 891,047.01 and 373,773.88

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Solution

The fourth proportional to 645,759.19, 891,047.01 and 373,773.88 is: 515,749.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,759.19 : 891,047.01 = 373,773.88 : x
  2. Step 2: Convert to fraction form
    645,759.19/891,047.01 = 373,773.88/x
  3. Step 3: Cross multiply
    645,759.19x = 891,047.01 × 373,773.88
  4. Step 4: Simplify right side
    645,759.19x = 333,050,098,190.10
  5. Step 5: Solve for x
    x = 333,050,098,190.10/645,759.19
  6. Step 6: Final answer
    x = 515,749.68

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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.