Home / 1,329,421.40-1,993,901.70-487,539.80

Finding the Fourth Proportional to 1,329,421.40, 1,993,901.70 and 487,539.80

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Solution

The fourth proportional to 1,329,421.40, 1,993,901.70 and 487,539.80 is: 731,225.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,329,421.40 : 1,993,901.70 = 487,539.80 : x
  2. Step 2: Convert to fraction form
    1,329,421.40/1,993,901.70 = 487,539.80/x
  3. Step 3: Cross multiply
    1,329,421.40x = 1,993,901.70 × 487,539.80
  4. Step 4: Simplify right side
    1,329,421.40x = 972,106,436,037.66
  5. Step 5: Solve for x
    x = 972,106,436,037.66/1,329,421.40
  6. Step 6: Final answer
    x = 731,225.21

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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.