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Finding the Fourth Proportional to 526,988.58, 790,039.88 and 426,900.57

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Solution

The fourth proportional to 526,988.58, 790,039.88 and 426,900.57 is: 639,992.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,988.58 : 790,039.88 = 426,900.57 : x
  2. Step 2: Convert to fraction form
    526,988.58/790,039.88 = 426,900.57/x
  3. Step 3: Cross multiply
    526,988.58x = 790,039.88 × 426,900.57
  4. Step 4: Simplify right side
    526,988.58x = 337,268,475,094.73
  5. Step 5: Solve for x
    x = 337,268,475,094.73/526,988.58
  6. Step 6: Final answer
    x = 639,992.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.