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Finding the Fourth Proportional to 581,428.40, 872,142.60 and 382,362.80

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Solution

The fourth proportional to 581,428.40, 872,142.60 and 382,362.80 is: 573,544.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    581,428.40 : 872,142.60 = 382,362.80 : x
  2. Step 2: Convert to fraction form
    581,428.40/872,142.60 = 382,362.80/x
  3. Step 3: Cross multiply
    581,428.40x = 872,142.60 × 382,362.80
  4. Step 4: Simplify right side
    581,428.40x = 333,474,886,535.28
  5. Step 5: Solve for x
    x = 333,474,886,535.28/581,428.40
  6. Step 6: Final answer
    x = 573,544.20

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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.