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Finding the Fourth Proportional to 586,428.60, 879,059.70 and 270,334.20

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Solution

The fourth proportional to 586,428.60, 879,059.70 and 270,334.20 is: 405,232.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,428.60 : 879,059.70 = 270,334.20 : x
  2. Step 2: Convert to fraction form
    586,428.60/879,059.70 = 270,334.20/x
  3. Step 3: Cross multiply
    586,428.60x = 879,059.70 × 270,334.20
  4. Step 4: Simplify right side
    586,428.60x = 237,639,900,751.74
  5. Step 5: Solve for x
    x = 237,639,900,751.74/586,428.60
  6. Step 6: Final answer
    x = 405,232.45

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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.