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Finding the Fourth Proportional to 905,508, 1,249,605.90 and 503,100

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Solution

The fourth proportional to 905,508, 1,249,605.90 and 503,100 is: 694,280.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,508 : 1,249,605.90 = 503,100 : x
  2. Step 2: Convert to fraction form
    905,508/1,249,605.90 = 503,100/x
  3. Step 3: Cross multiply
    905,508x = 1,249,605.90 × 503,100
  4. Step 4: Simplify right side
    905,508x = 628,676,728,290
  5. Step 5: Solve for x
    x = 628,676,728,290/905,508
  6. Step 6: Final answer
    x = 694,280.70

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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.