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Finding the Fourth Proportional to 611,384.12, 843,810.48 and 356,734.68

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Solution

The fourth proportional to 611,384.12, 843,810.48 and 356,734.68 is: 492,352.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,384.12 : 843,810.48 = 356,734.68 : x
  2. Step 2: Convert to fraction form
    611,384.12/843,810.48 = 356,734.68/x
  3. Step 3: Cross multiply
    611,384.12x = 843,810.48 × 356,734.68
  4. Step 4: Simplify right side
    611,384.12x = 301,016,461,563.45
  5. Step 5: Solve for x
    x = 301,016,461,563.45/611,384.12
  6. Step 6: Final answer
    x = 492,352.44

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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.