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Finding the Fourth Proportional to 816,017.92, 1,223,556 and 316,798.72

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Solution

The fourth proportional to 816,017.92, 1,223,556 and 316,798.72 is: 475,015.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,017.92 : 1,223,556 = 316,798.72 : x
  2. Step 2: Convert to fraction form
    816,017.92/1,223,556 = 316,798.72/x
  3. Step 3: Cross multiply
    816,017.92x = 1,223,556 × 316,798.72
  4. Step 4: Simplify right side
    816,017.92x = 387,620,974,648.32
  5. Step 5: Solve for x
    x = 387,620,974,648.32/816,017.92
  6. Step 6: Final answer
    x = 475,015.27

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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.