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Finding the Fourth Proportional to 556,220.40, 834,136.20 and 289,892.40

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Solution

The fourth proportional to 556,220.40, 834,136.20 and 289,892.40 is: 434,737.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,220.40 : 834,136.20 = 289,892.40 : x
  2. Step 2: Convert to fraction form
    556,220.40/834,136.20 = 289,892.40/x
  3. Step 3: Cross multiply
    556,220.40x = 834,136.20 × 289,892.40
  4. Step 4: Simplify right side
    556,220.40x = 241,809,744,944.88
  5. Step 5: Solve for x
    x = 241,809,744,944.88/556,220.40
  6. Step 6: Final answer
    x = 434,737.28

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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.