Home / 687,288.20-1,029,182.70-655,795.40

Finding the Fourth Proportional to 687,288.20, 1,029,182.70 and 655,795.40

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Solution

The fourth proportional to 687,288.20, 1,029,182.70 and 655,795.40 is: 982,023.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,288.20 : 1,029,182.70 = 655,795.40 : x
  2. Step 2: Convert to fraction form
    687,288.20/1,029,182.70 = 655,795.40/x
  3. Step 3: Cross multiply
    687,288.20x = 1,029,182.70 × 655,795.40
  4. Step 4: Simplify right side
    687,288.20x = 674,933,280,419.58
  5. Step 5: Solve for x
    x = 674,933,280,419.58/687,288.20
  6. Step 6: Final answer
    x = 982,023.67

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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.