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Finding the Fourth Proportional to 549,026.18, 758,128.97 and 345,416.48

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Solution

The fourth proportional to 549,026.18, 758,128.97 and 345,416.48 is: 476,972.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,026.18 : 758,128.97 = 345,416.48 : x
  2. Step 2: Convert to fraction form
    549,026.18/758,128.97 = 345,416.48/x
  3. Step 3: Cross multiply
    549,026.18x = 758,128.97 × 345,416.48
  4. Step 4: Simplify right side
    549,026.18x = 261,870,240,371.67
  5. Step 5: Solve for x
    x = 261,870,240,371.67/549,026.18
  6. Step 6: Final answer
    x = 476,972.23

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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.