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Finding the Fourth Proportional to 620,079.20, 930,205.20 and 265,090.40

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Solution

The fourth proportional to 620,079.20, 930,205.20 and 265,090.40 is: 397,672.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,079.20 : 930,205.20 = 265,090.40 : x
  2. Step 2: Convert to fraction form
    620,079.20/930,205.20 = 265,090.40/x
  3. Step 3: Cross multiply
    620,079.20x = 930,205.20 × 265,090.40
  4. Step 4: Simplify right side
    620,079.20x = 246,588,468,550.08
  5. Step 5: Solve for x
    x = 246,588,468,550.08/620,079.20
  6. Step 6: Final answer
    x = 397,672.54

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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.