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Finding the Fourth Proportional to 554,379.90, 831,569.85 and 455,964.90

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Solution

The fourth proportional to 554,379.90, 831,569.85 and 455,964.90 is: 683,947.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,379.90 : 831,569.85 = 455,964.90 : x
  2. Step 2: Convert to fraction form
    554,379.90/831,569.85 = 455,964.90/x
  3. Step 3: Cross multiply
    554,379.90x = 831,569.85 × 455,964.90
  4. Step 4: Simplify right side
    554,379.90x = 379,166,663,498.27
  5. Step 5: Solve for x
    x = 379,166,663,498.27/554,379.90
  6. Step 6: Final answer
    x = 683,947.35

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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.