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Finding the Fourth Proportional to 551,980.80, 761,702.40 and 325,699.20

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Solution

The fourth proportional to 551,980.80, 761,702.40 and 325,699.20 is: 449,446.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,980.80 : 761,702.40 = 325,699.20 : x
  2. Step 2: Convert to fraction form
    551,980.80/761,702.40 = 325,699.20/x
  3. Step 3: Cross multiply
    551,980.80x = 761,702.40 × 325,699.20
  4. Step 4: Simplify right side
    551,980.80x = 248,085,862,318.08
  5. Step 5: Solve for x
    x = 248,085,862,318.08/551,980.80
  6. Step 6: Final answer
    x = 449,446.54

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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.