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Finding the Fourth Proportional to 657,040.80, 906,714.32 and 355,234.80

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Solution

The fourth proportional to 657,040.80, 906,714.32 and 355,234.80 is: 490,222.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,040.80 : 906,714.32 = 355,234.80 : x
  2. Step 2: Convert to fraction form
    657,040.80/906,714.32 = 355,234.80/x
  3. Step 3: Cross multiply
    657,040.80x = 906,714.32 × 355,234.80
  4. Step 4: Simplify right side
    657,040.80x = 322,096,480,122.34
  5. Step 5: Solve for x
    x = 322,096,480,122.34/657,040.80
  6. Step 6: Final answer
    x = 490,222.95

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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.