Home / 917,728.83-1,376,620.41-438,007.18

Finding the Fourth Proportional to 917,728.83, 1,376,620.41 and 438,007.18

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Solution

The fourth proportional to 917,728.83, 1,376,620.41 and 438,007.18 is: 657,023.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,728.83 : 1,376,620.41 = 438,007.18 : x
  2. Step 2: Convert to fraction form
    917,728.83/1,376,620.41 = 438,007.18/x
  3. Step 3: Cross multiply
    917,728.83x = 1,376,620.41 × 438,007.18
  4. Step 4: Simplify right side
    917,728.83x = 602,969,623,714.54
  5. Step 5: Solve for x
    x = 602,969,623,714.54/917,728.83
  6. Step 6: Final answer
    x = 657,023.74

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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.