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Finding the Fourth Proportional to 453,991.90, 680,987.85 and 383,133.10

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Solution

The fourth proportional to 453,991.90, 680,987.85 and 383,133.10 is: 574,699.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,991.90 : 680,987.85 = 383,133.10 : x
  2. Step 2: Convert to fraction form
    453,991.90/680,987.85 = 383,133.10/x
  3. Step 3: Cross multiply
    453,991.90x = 680,987.85 × 383,133.10
  4. Step 4: Simplify right side
    453,991.90x = 260,908,986,032.84
  5. Step 5: Solve for x
    x = 260,908,986,032.84/453,991.90
  6. Step 6: Final answer
    x = 574,699.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.