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Finding the Fourth Proportional to 909,436.54, 1,363,779.48 and 310,446

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Solution

The fourth proportional to 909,436.54, 1,363,779.48 and 310,446 is: 465,540.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,436.54 : 1,363,779.48 = 310,446 : x
  2. Step 2: Convert to fraction form
    909,436.54/1,363,779.48 = 310,446/x
  3. Step 3: Cross multiply
    909,436.54x = 1,363,779.48 × 310,446
  4. Step 4: Simplify right side
    909,436.54x = 423,379,884,448.08
  5. Step 5: Solve for x
    x = 423,379,884,448.08/909,436.54
  6. Step 6: Final answer
    x = 465,540.88

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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.