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Finding the Fourth Proportional to 613,271.40, 919,907.10 and 453,839.10

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Solution

The fourth proportional to 613,271.40, 919,907.10 and 453,839.10 is: 680,758.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,271.40 : 919,907.10 = 453,839.10 : x
  2. Step 2: Convert to fraction form
    613,271.40/919,907.10 = 453,839.10/x
  3. Step 3: Cross multiply
    613,271.40x = 919,907.10 × 453,839.10
  4. Step 4: Simplify right side
    613,271.40x = 417,489,810,347.61
  5. Step 5: Solve for x
    x = 417,489,810,347.61/613,271.40
  6. Step 6: Final answer
    x = 680,758.65

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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.