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Finding the Fourth Proportional to 629,652.35, 868,940.59 and 357,715.30

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Solution

The fourth proportional to 629,652.35, 868,940.59 and 357,715.30 is: 493,658.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,652.35 : 868,940.59 = 357,715.30 : x
  2. Step 2: Convert to fraction form
    629,652.35/868,940.59 = 357,715.30/x
  3. Step 3: Cross multiply
    629,652.35x = 868,940.59 × 357,715.30
  4. Step 4: Simplify right side
    629,652.35x = 310,833,343,834.03
  5. Step 5: Solve for x
    x = 310,833,343,834.03/629,652.35
  6. Step 6: Final answer
    x = 493,658.67

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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.