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Finding the Fourth Proportional to 434,379.70, 651,569.55 and 418,633.30

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Solution

The fourth proportional to 434,379.70, 651,569.55 and 418,633.30 is: 627,949.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,379.70 : 651,569.55 = 418,633.30 : x
  2. Step 2: Convert to fraction form
    434,379.70/651,569.55 = 418,633.30/x
  3. Step 3: Cross multiply
    434,379.70x = 651,569.55 × 418,633.30
  4. Step 4: Simplify right side
    434,379.70x = 272,768,710,896.02
  5. Step 5: Solve for x
    x = 272,768,710,896.02/434,379.70
  6. Step 6: Final answer
    x = 627,949.95

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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.