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Finding the Fourth Proportional to 620,072.70, 930,109.05 and 480,104.70

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Solution

The fourth proportional to 620,072.70, 930,109.05 and 480,104.70 is: 720,157.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,072.70 : 930,109.05 = 480,104.70 : x
  2. Step 2: Convert to fraction form
    620,072.70/930,109.05 = 480,104.70/x
  3. Step 3: Cross multiply
    620,072.70x = 930,109.05 × 480,104.70
  4. Step 4: Simplify right side
    620,072.70x = 446,549,726,417.54
  5. Step 5: Solve for x
    x = 446,549,726,417.54/620,072.70
  6. Step 6: Final answer
    x = 720,157.05

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Similar ratio
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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.