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Finding the Fourth Proportional to 611,423.72, 843,766.36 and 339,492.12

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Solution

The fourth proportional to 611,423.72, 843,766.36 and 339,492.12 is: 468,500.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,423.72 : 843,766.36 = 339,492.12 : x
  2. Step 2: Convert to fraction form
    611,423.72/843,766.36 = 339,492.12/x
  3. Step 3: Cross multiply
    611,423.72x = 843,766.36 × 339,492.12
  4. Step 4: Simplify right side
    611,423.72x = 286,452,030,341.08
  5. Step 5: Solve for x
    x = 286,452,030,341.08/611,423.72
  6. Step 6: Final answer
    x = 468,500.03

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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.