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Finding the Fourth Proportional to 1,176,426, 1,764,901.44 and 428,472

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Solution

The fourth proportional to 1,176,426, 1,764,901.44 and 428,472 is: 642,803.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,176,426 : 1,764,901.44 = 428,472 : x
  2. Step 2: Convert to fraction form
    1,176,426/1,764,901.44 = 428,472/x
  3. Step 3: Cross multiply
    1,176,426x = 1,764,901.44 × 428,472
  4. Step 4: Simplify right side
    1,176,426x = 756,210,849,799.68
  5. Step 5: Solve for x
    x = 756,210,849,799.68/1,176,426
  6. Step 6: Final answer
    x = 642,803.58

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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.