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Finding the Fourth Proportional to 628,780.76, 942,602.16 and 229,327.88

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Solution

The fourth proportional to 628,780.76, 942,602.16 and 229,327.88 is: 343,784.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,780.76 : 942,602.16 = 229,327.88 : x
  2. Step 2: Convert to fraction form
    628,780.76/942,602.16 = 229,327.88/x
  3. Step 3: Cross multiply
    628,780.76x = 942,602.16 × 229,327.88
  4. Step 4: Simplify right side
    628,780.76x = 216,164,955,036.22
  5. Step 5: Solve for x
    x = 216,164,955,036.22/628,780.76
  6. Step 6: Final answer
    x = 343,784.30

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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.