Home / 764,469.18-1,140,253.65-663,838.02

Finding the Fourth Proportional to 764,469.18, 1,140,253.65 and 663,838.02

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Solution

The fourth proportional to 764,469.18, 1,140,253.65 and 663,838.02 is: 990,155.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,469.18 : 1,140,253.65 = 663,838.02 : x
  2. Step 2: Convert to fraction form
    764,469.18/1,140,253.65 = 663,838.02/x
  3. Step 3: Cross multiply
    764,469.18x = 1,140,253.65 × 663,838.02
  4. Step 4: Simplify right side
    764,469.18x = 756,943,725,313.77
  5. Step 5: Solve for x
    x = 756,943,725,313.77/764,469.18
  6. Step 6: Final answer
    x = 990,155.97

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.