Home / 942,499.20-1,413,748.80-643,900.80

Finding the Fourth Proportional to 942,499.20, 1,413,748.80 and 643,900.80

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Solution

The fourth proportional to 942,499.20, 1,413,748.80 and 643,900.80 is: 965,851.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    942,499.20 : 1,413,748.80 = 643,900.80 : x
  2. Step 2: Convert to fraction form
    942,499.20/1,413,748.80 = 643,900.80/x
  3. Step 3: Cross multiply
    942,499.20x = 1,413,748.80 × 643,900.80
  4. Step 4: Simplify right side
    942,499.20x = 910,313,983,319.04
  5. Step 5: Solve for x
    x = 910,313,983,319.04/942,499.20
  6. Step 6: Final answer
    x = 965,851.20

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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.