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Finding the Fourth Proportional to 432,035.40, 648,830.70 and 313,840.20

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Solution

The fourth proportional to 432,035.40, 648,830.70 and 313,840.20 is: 471,325.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,035.40 : 648,830.70 = 313,840.20 : x
  2. Step 2: Convert to fraction form
    432,035.40/648,830.70 = 313,840.20/x
  3. Step 3: Cross multiply
    432,035.40x = 648,830.70 × 313,840.20
  4. Step 4: Simplify right side
    432,035.40x = 203,629,156,654.14
  5. Step 5: Solve for x
    x = 203,629,156,654.14/432,035.40
  6. Step 6: Final answer
    x = 471,325.17

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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.