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Finding the Fourth Proportional to 611,062.50, 843,266.26 and 342,790.50

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Solution

The fourth proportional to 611,062.50, 843,266.26 and 342,790.50 is: 473,050.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,062.50 : 843,266.26 = 342,790.50 : x
  2. Step 2: Convert to fraction form
    611,062.50/843,266.26 = 342,790.50/x
  3. Step 3: Cross multiply
    611,062.50x = 843,266.26 × 342,790.50
  4. Step 4: Simplify right side
    611,062.50x = 289,063,662,898.53
  5. Step 5: Solve for x
    x = 289,063,662,898.53/611,062.50
  6. Step 6: Final answer
    x = 473,050.90

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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.