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Finding the Fourth Proportional to 528,425.60, 793,156.80 and 262,486.40

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Solution

The fourth proportional to 528,425.60, 793,156.80 and 262,486.40 is: 393,987.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,425.60 : 793,156.80 = 262,486.40 : x
  2. Step 2: Convert to fraction form
    528,425.60/793,156.80 = 262,486.40/x
  3. Step 3: Cross multiply
    528,425.60x = 793,156.80 × 262,486.40
  4. Step 4: Simplify right side
    528,425.60x = 208,192,873,067.52
  5. Step 5: Solve for x
    x = 208,192,873,067.52/528,425.60
  6. Step 6: Final answer
    x = 393,987.11

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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.