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Finding the Fourth Proportional to 1,411,890.23, 1,948,420.76 and 767,310.57

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Solution

The fourth proportional to 1,411,890.23, 1,948,420.76 and 767,310.57 is: 1,058,895.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,411,890.23 : 1,948,420.76 = 767,310.57 : x
  2. Step 2: Convert to fraction form
    1,411,890.23/1,948,420.76 = 767,310.57/x
  3. Step 3: Cross multiply
    1,411,890.23x = 1,948,420.76 × 767,310.57
  4. Step 4: Simplify right side
    1,411,890.23x = 1,495,043,840,118.88
  5. Step 5: Solve for x
    x = 1,495,043,840,118.88/1,411,890.23
  6. Step 6: Final answer
    x = 1,058,895.24

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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.