Home / 687,796.20-1,029,944.70-656,303.40

Finding the Fourth Proportional to 687,796.20, 1,029,944.70 and 656,303.40

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Solution

The fourth proportional to 687,796.20, 1,029,944.70 and 656,303.40 is: 982,785.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,796.20 : 1,029,944.70 = 656,303.40 : x
  2. Step 2: Convert to fraction form
    687,796.20/1,029,944.70 = 656,303.40/x
  3. Step 3: Cross multiply
    687,796.20x = 1,029,944.70 × 656,303.40
  4. Step 4: Simplify right side
    687,796.20x = 675,956,208,421.98
  5. Step 5: Solve for x
    x = 675,956,208,421.98/687,796.20
  6. Step 6: Final answer
    x = 982,785.61

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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.