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Finding the Fourth Proportional to 1,098,247.78, 1,514,800.74 and 1,007,895.52

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Solution

The fourth proportional to 1,098,247.78, 1,514,800.74 and 1,007,895.52 is: 1,390,178.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,098,247.78 : 1,514,800.74 = 1,007,895.52 : x
  2. Step 2: Convert to fraction form
    1,098,247.78/1,514,800.74 = 1,007,895.52/x
  3. Step 3: Cross multiply
    1,098,247.78x = 1,514,800.74 × 1,007,895.52
  4. Step 4: Simplify right side
    1,098,247.78x = 1,526,760,879,538.68
  5. Step 5: Solve for x
    x = 1,526,760,879,538.68/1,098,247.78
  6. Step 6: Final answer
    x = 1,390,178.89

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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.