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Finding the Fourth Proportional to 536,929.80, 806,009.10 and 315,438.60

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Solution

The fourth proportional to 536,929.80, 806,009.10 and 315,438.60 is: 473,518.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,929.80 : 806,009.10 = 315,438.60 : x
  2. Step 2: Convert to fraction form
    536,929.80/806,009.10 = 315,438.60/x
  3. Step 3: Cross multiply
    536,929.80x = 806,009.10 × 315,438.60
  4. Step 4: Simplify right side
    536,929.80x = 254,246,382,091.26
  5. Step 5: Solve for x
    x = 254,246,382,091.26/536,929.80
  6. Step 6: Final answer
    x = 473,518.85

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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.