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Finding the Fourth Proportional to 570,057.54, 786,669.03 and 315,408.75

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Solution

The fourth proportional to 570,057.54, 786,669.03 and 315,408.75 is: 435,258.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,057.54 : 786,669.03 = 315,408.75 : x
  2. Step 2: Convert to fraction form
    570,057.54/786,669.03 = 315,408.75/x
  3. Step 3: Cross multiply
    570,057.54x = 786,669.03 × 315,408.75
  4. Step 4: Simplify right side
    570,057.54x = 248,122,295,416.01
  5. Step 5: Solve for x
    x = 248,122,295,416.01/570,057.54
  6. Step 6: Final answer
    x = 435,258.33

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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.