Home / 1,079,808-1,490,135.16-627,128.16

Finding the Fourth Proportional to 1,079,808, 1,490,135.16 and 627,128.16

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Solution

The fourth proportional to 1,079,808, 1,490,135.16 and 627,128.16 is: 865,436.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,079,808 : 1,490,135.16 = 627,128.16 : x
  2. Step 2: Convert to fraction form
    1,079,808/1,490,135.16 = 627,128.16/x
  3. Step 3: Cross multiply
    1,079,808x = 1,490,135.16 × 627,128.16
  4. Step 4: Simplify right side
    1,079,808x = 934,505,721,042.11
  5. Step 5: Solve for x
    x = 934,505,721,042.11/1,079,808
  6. Step 6: Final answer
    x = 865,436.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.