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Finding the Fourth Proportional to 518,608.67, 715,204.37 and 355,502.21

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Solution

The fourth proportional to 518,608.67, 715,204.37 and 355,502.21 is: 490,267.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,608.67 : 715,204.37 = 355,502.21 : x
  2. Step 2: Convert to fraction form
    518,608.67/715,204.37 = 355,502.21/x
  3. Step 3: Cross multiply
    518,608.67x = 715,204.37 × 355,502.21
  4. Step 4: Simplify right side
    518,608.67x = 254,256,732,359.15
  5. Step 5: Solve for x
    x = 254,256,732,359.15/518,608.67
  6. Step 6: Final answer
    x = 490,267.03

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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.