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Finding the Fourth Proportional to 405,843.28, 608,042.64 and 346,072.60

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Solution

The fourth proportional to 405,843.28, 608,042.64 and 346,072.60 is: 518,492.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,843.28 : 608,042.64 = 346,072.60 : x
  2. Step 2: Convert to fraction form
    405,843.28/608,042.64 = 346,072.60/x
  3. Step 3: Cross multiply
    405,843.28x = 608,042.64 × 346,072.60
  4. Step 4: Simplify right side
    405,843.28x = 210,426,897,335.66
  5. Step 5: Solve for x
    x = 210,426,897,335.66/405,843.28
  6. Step 6: Final answer
    x = 518,492.99

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1.5x scale

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.