Home / 765,453.20-1,148,437.90-338,930.78

Finding the Fourth Proportional to 765,453.20, 1,148,437.90 and 338,930.78

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Solution

The fourth proportional to 765,453.20, 1,148,437.90 and 338,930.78 is: 508,510.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,453.20 : 1,148,437.90 = 338,930.78 : x
  2. Step 2: Convert to fraction form
    765,453.20/1,148,437.90 = 338,930.78/x
  3. Step 3: Cross multiply
    765,453.20x = 1,148,437.90 × 338,930.78
  4. Step 4: Simplify right side
    765,453.20x = 389,240,953,228.56
  5. Step 5: Solve for x
    x = 389,240,953,228.56/765,453.20
  6. Step 6: Final answer
    x = 508,510.45

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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.