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Finding the Fourth Proportional to 492,359.40, 738,830.70 and 358,903.80

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Solution

The fourth proportional to 492,359.40, 738,830.70 and 358,903.80 is: 538,568.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,359.40 : 738,830.70 = 358,903.80 : x
  2. Step 2: Convert to fraction form
    492,359.40/738,830.70 = 358,903.80/x
  3. Step 3: Cross multiply
    492,359.40x = 738,830.70 × 358,903.80
  4. Step 4: Simplify right side
    492,359.40x = 265,169,145,786.66
  5. Step 5: Solve for x
    x = 265,169,145,786.66/492,359.40
  6. Step 6: Final answer
    x = 538,568.26

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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.