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Finding the Fourth Proportional to 518,562, 715,615.56 and 292,215.60

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Solution

The fourth proportional to 518,562, 715,615.56 and 292,215.60 is: 403,257.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,562 : 715,615.56 = 292,215.60 : x
  2. Step 2: Convert to fraction form
    518,562/715,615.56 = 292,215.60/x
  3. Step 3: Cross multiply
    518,562x = 715,615.56 × 292,215.60
  4. Step 4: Simplify right side
    518,562x = 209,114,030,234.74
  5. Step 5: Solve for x
    x = 209,114,030,234.74/518,562
  6. Step 6: Final answer
    x = 403,257.53

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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.