Home / 993,529.10-1,489,457.73-432,140.78

Finding the Fourth Proportional to 993,529.10, 1,489,457.73 and 432,140.78

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Solution

The fourth proportional to 993,529.10, 1,489,457.73 and 432,140.78 is: 647,847.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    993,529.10 : 1,489,457.73 = 432,140.78 : x
  2. Step 2: Convert to fraction form
    993,529.10/1,489,457.73 = 432,140.78/x
  3. Step 3: Cross multiply
    993,529.10x = 1,489,457.73 × 432,140.78
  4. Step 4: Simplify right side
    993,529.10x = 643,655,425,219.23
  5. Step 5: Solve for x
    x = 643,655,425,219.23/993,529.10
  6. Step 6: Final answer
    x = 647,847.58

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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.