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Finding the Fourth Proportional to 657,070.40, 984,050.40 and 445,563.20

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Solution

The fourth proportional to 657,070.40, 984,050.40 and 445,563.20 is: 667,290.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,070.40 : 984,050.40 = 445,563.20 : x
  2. Step 2: Convert to fraction form
    657,070.40/984,050.40 = 445,563.20/x
  3. Step 3: Cross multiply
    657,070.40x = 984,050.40 × 445,563.20
  4. Step 4: Simplify right side
    657,070.40x = 438,456,645,185.28
  5. Step 5: Solve for x
    x = 438,456,645,185.28/657,070.40
  6. Step 6: Final answer
    x = 667,290.21

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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.