Home / 739,328.70-1,109,511.45-318,906.30

Finding the Fourth Proportional to 739,328.70, 1,109,511.45 and 318,906.30

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Solution

The fourth proportional to 739,328.70, 1,109,511.45 and 318,906.30 is: 478,583.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,328.70 : 1,109,511.45 = 318,906.30 : x
  2. Step 2: Convert to fraction form
    739,328.70/1,109,511.45 = 318,906.30/x
  3. Step 3: Cross multiply
    739,328.70x = 1,109,511.45 × 318,906.30
  4. Step 4: Simplify right side
    739,328.70x = 353,830,191,327.14
  5. Step 5: Solve for x
    x = 353,830,191,327.14/739,328.70
  6. Step 6: Final answer
    x = 478,583.06

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1.5x scale

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.