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Finding the Fourth Proportional to 657,254.88, 907,012.08 and 355,448.96

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Solution

The fourth proportional to 657,254.88, 907,012.08 and 355,448.96 is: 490,519.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,254.88 : 907,012.08 = 355,448.96 : x
  2. Step 2: Convert to fraction form
    657,254.88/907,012.08 = 355,448.96/x
  3. Step 3: Cross multiply
    657,254.88x = 907,012.08 × 355,448.96
  4. Step 4: Simplify right side
    657,254.88x = 322,396,500,543.44
  5. Step 5: Solve for x
    x = 322,396,500,543.44/657,254.88
  6. Step 6: Final answer
    x = 490,519.75

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1.5x scale

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.