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Finding the Fourth Proportional to 663,356.64, 915,562.80 and 462,036

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Solution

The fourth proportional to 663,356.64, 915,562.80 and 462,036 is: 637,700.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,356.64 : 915,562.80 = 462,036 : x
  2. Step 2: Convert to fraction form
    663,356.64/915,562.80 = 462,036/x
  3. Step 3: Cross multiply
    663,356.64x = 915,562.80 × 462,036
  4. Step 4: Simplify right side
    663,356.64x = 423,022,973,860.80
  5. Step 5: Solve for x
    x = 423,022,973,860.80/663,356.64
  6. Step 6: Final answer
    x = 637,700.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.