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Finding the Fourth Proportional to 554,679.08, 830,385.66 and 343,638.44

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Solution

The fourth proportional to 554,679.08, 830,385.66 and 343,638.44 is: 514,446.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,679.08 : 830,385.66 = 343,638.44 : x
  2. Step 2: Convert to fraction form
    554,679.08/830,385.66 = 343,638.44/x
  3. Step 3: Cross multiply
    554,679.08x = 830,385.66 × 343,638.44
  4. Step 4: Simplify right side
    554,679.08x = 285,352,432,800.77
  5. Step 5: Solve for x
    x = 285,352,432,800.77/554,679.08
  6. Step 6: Final answer
    x = 514,446.00

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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.