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Finding the Fourth Proportional to 628,798.88, 942,877.88 and 308,972

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Solution

The fourth proportional to 628,798.88, 942,877.88 and 308,972 is: 463,300.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,798.88 : 942,877.88 = 308,972 : x
  2. Step 2: Convert to fraction form
    628,798.88/942,877.88 = 308,972/x
  3. Step 3: Cross multiply
    628,798.88x = 942,877.88 × 308,972
  4. Step 4: Simplify right side
    628,798.88x = 291,322,864,339.36
  5. Step 5: Solve for x
    x = 291,322,864,339.36/628,798.88
  6. Step 6: Final answer
    x = 463,300.55

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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.