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Finding the Fourth Proportional to 551,805.60, 761,590.80 and 325,437.60

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Solution

The fourth proportional to 551,805.60, 761,590.80 and 325,437.60 is: 449,162.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,805.60 : 761,590.80 = 325,437.60 : x
  2. Step 2: Convert to fraction form
    551,805.60/761,590.80 = 325,437.60/x
  3. Step 3: Cross multiply
    551,805.60x = 761,590.80 × 325,437.60
  4. Step 4: Simplify right side
    551,805.60x = 247,850,282,134.08
  5. Step 5: Solve for x
    x = 247,850,282,134.08/551,805.60
  6. Step 6: Final answer
    x = 449,162.32

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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.