Home / 917,728.77-1,376,620.32-438,007.12

Finding the Fourth Proportional to 917,728.77, 1,376,620.32 and 438,007.12

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Solution

The fourth proportional to 917,728.77, 1,376,620.32 and 438,007.12 is: 657,023.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,728.77 : 1,376,620.32 = 438,007.12 : x
  2. Step 2: Convert to fraction form
    917,728.77/1,376,620.32 = 438,007.12/x
  3. Step 3: Cross multiply
    917,728.77x = 1,376,620.32 × 438,007.12
  4. Step 4: Simplify right side
    917,728.77x = 602,969,501,696.68
  5. Step 5: Solve for x
    x = 602,969,501,696.68/917,728.77
  6. Step 6: Final answer
    x = 657,023.65

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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.