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Finding the Fourth Proportional to 620,600.90, 930,901.35 and 305,672.90

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Solution

The fourth proportional to 620,600.90, 930,901.35 and 305,672.90 is: 458,509.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,600.90 : 930,901.35 = 305,672.90 : x
  2. Step 2: Convert to fraction form
    620,600.90/930,901.35 = 305,672.90/x
  3. Step 3: Cross multiply
    620,600.90x = 930,901.35 × 305,672.90
  4. Step 4: Simplify right side
    620,600.90x = 284,551,315,268.42
  5. Step 5: Solve for x
    x = 284,551,315,268.42/620,600.90
  6. Step 6: Final answer
    x = 458,509.35

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Half scale
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Double scale
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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.