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Finding the Fourth Proportional to 648,309.60, 972,464.40 and 175,042.80

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Solution

The fourth proportional to 648,309.60, 972,464.40 and 175,042.80 is: 262,564.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,309.60 : 972,464.40 = 175,042.80 : x
  2. Step 2: Convert to fraction form
    648,309.60/972,464.40 = 175,042.80/x
  3. Step 3: Cross multiply
    648,309.60x = 972,464.40 × 175,042.80
  4. Step 4: Simplify right side
    648,309.60x = 170,222,891,476.32
  5. Step 5: Solve for x
    x = 170,222,891,476.32/648,309.60
  6. Step 6: Final answer
    x = 262,564.20

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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.