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Finding the Fourth Proportional to 625,779.48, 938,696.40 and 306,200.46

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Solution

The fourth proportional to 625,779.48, 938,696.40 and 306,200.46 is: 459,313.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,779.48 : 938,696.40 = 306,200.46 : x
  2. Step 2: Convert to fraction form
    625,779.48/938,696.40 = 306,200.46/x
  3. Step 3: Cross multiply
    625,779.48x = 938,696.40 × 306,200.46
  4. Step 4: Simplify right side
    625,779.48x = 287,429,269,480.34
  5. Step 5: Solve for x
    x = 287,429,269,480.34/625,779.48
  6. Step 6: Final answer
    x = 459,313.99

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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.