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Finding the Fourth Proportional to 611,068, 843,279.60 and 342,801.76

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Solution

The fourth proportional to 611,068, 843,279.60 and 342,801.76 is: 473,069.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,068 : 843,279.60 = 342,801.76 : x
  2. Step 2: Convert to fraction form
    611,068/843,279.60 = 342,801.76/x
  3. Step 3: Cross multiply
    611,068x = 843,279.60 × 342,801.76
  4. Step 4: Simplify right side
    611,068x = 289,077,731,052.10
  5. Step 5: Solve for x
    x = 289,077,731,052.10/611,068
  6. Step 6: Final answer
    x = 473,069.66

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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.