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Finding the Fourth Proportional to 671,080, 926,096.80 and 369,280.64

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Solution

The fourth proportional to 671,080, 926,096.80 and 369,280.64 is: 509,610.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,080 : 926,096.80 = 369,280.64 : x
  2. Step 2: Convert to fraction form
    671,080/926,096.80 = 369,280.64/x
  3. Step 3: Cross multiply
    671,080x = 926,096.80 × 369,280.64
  4. Step 4: Simplify right side
    671,080x = 341,989,619,005.95
  5. Step 5: Solve for x
    x = 341,989,619,005.95/671,080
  6. Step 6: Final answer
    x = 509,610.80

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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.