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Finding the Fourth Proportional to 554,505.45, 831,179.30 and 402,334.89

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Solution

The fourth proportional to 554,505.45, 831,179.30 and 402,334.89 is: 603,082.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,505.45 : 831,179.30 = 402,334.89 : x
  2. Step 2: Convert to fraction form
    554,505.45/831,179.30 = 402,334.89/x
  3. Step 3: Cross multiply
    554,505.45x = 831,179.30 × 402,334.89
  4. Step 4: Simplify right side
    554,505.45x = 334,412,430,224.10
  5. Step 5: Solve for x
    x = 334,412,430,224.10/554,505.45
  6. Step 6: Final answer
    x = 603,082.31

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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.