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Finding the Fourth Proportional to 572,021.04, 789,503.76 and 330,342.96

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Solution

The fourth proportional to 572,021.04, 789,503.76 and 330,342.96 is: 455,939.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,021.04 : 789,503.76 = 330,342.96 : x
  2. Step 2: Convert to fraction form
    572,021.04/789,503.76 = 330,342.96/x
  3. Step 3: Cross multiply
    572,021.04x = 789,503.76 × 330,342.96
  4. Step 4: Simplify right side
    572,021.04x = 260,807,009,009.53
  5. Step 5: Solve for x
    x = 260,807,009,009.53/572,021.04
  6. Step 6: Final answer
    x = 455,939.54

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.