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Finding the Fourth Proportional to 697,635.48, 962,749.06 and 391,728.90

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Solution

The fourth proportional to 697,635.48, 962,749.06 and 391,728.90 is: 540,592.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    697,635.48 : 962,749.06 = 391,728.90 : x
  2. Step 2: Convert to fraction form
    697,635.48/962,749.06 = 391,728.90/x
  3. Step 3: Cross multiply
    697,635.48x = 962,749.06 × 391,728.90
  4. Step 4: Simplify right side
    697,635.48x = 377,136,630,249.83
  5. Step 5: Solve for x
    x = 377,136,630,249.83/697,635.48
  6. Step 6: Final answer
    x = 540,592.67

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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.