Home / 917,728.52-1,376,619.94-438,006.88

Finding the Fourth Proportional to 917,728.52, 1,376,619.94 and 438,006.88

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Solution

The fourth proportional to 917,728.52, 1,376,619.94 and 438,006.88 is: 657,023.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,728.52 : 1,376,619.94 = 438,006.88 : x
  2. Step 2: Convert to fraction form
    917,728.52/1,376,619.94 = 438,006.88/x
  3. Step 3: Cross multiply
    917,728.52x = 1,376,619.94 × 438,006.88
  4. Step 4: Simplify right side
    917,728.52x = 602,968,997,982.09
  5. Step 5: Solve for x
    x = 602,968,997,982.09/917,728.52
  6. Step 6: Final answer
    x = 657,023.28

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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.