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Finding the Fourth Proportional to 432,925.80, 649,388.70 and 291,208.20

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Solution

The fourth proportional to 432,925.80, 649,388.70 and 291,208.20 is: 436,812.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,925.80 : 649,388.70 = 291,208.20 : x
  2. Step 2: Convert to fraction form
    432,925.80/649,388.70 = 291,208.20/x
  3. Step 3: Cross multiply
    432,925.80x = 649,388.70 × 291,208.20
  4. Step 4: Simplify right side
    432,925.80x = 189,107,314,427.34
  5. Step 5: Solve for x
    x = 189,107,314,427.34/432,925.80
  6. Step 6: Final answer
    x = 436,812.30

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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.