Home / 739,330.20-1,109,513.70-318,907.80

Finding the Fourth Proportional to 739,330.20, 1,109,513.70 and 318,907.80

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Solution

The fourth proportional to 739,330.20, 1,109,513.70 and 318,907.80 is: 478,585.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,330.20 : 1,109,513.70 = 318,907.80 : x
  2. Step 2: Convert to fraction form
    739,330.20/1,109,513.70 = 318,907.80/x
  3. Step 3: Cross multiply
    739,330.20x = 1,109,513.70 × 318,907.80
  4. Step 4: Simplify right side
    739,330.20x = 353,832,573,136.86
  5. Step 5: Solve for x
    x = 353,832,573,136.86/739,330.20
  6. Step 6: Final answer
    x = 478,585.31

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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.