Home / 986,459.80-1,479,732.75-312,590.76

Finding the Fourth Proportional to 986,459.80, 1,479,732.75 and 312,590.76

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Solution

The fourth proportional to 986,459.80, 1,479,732.75 and 312,590.76 is: 468,899.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,459.80 : 1,479,732.75 = 312,590.76 : x
  2. Step 2: Convert to fraction form
    986,459.80/1,479,732.75 = 312,590.76/x
  3. Step 3: Cross multiply
    986,459.80x = 1,479,732.75 × 312,590.76
  4. Step 4: Simplify right side
    986,459.80x = 462,550,784,919.39
  5. Step 5: Solve for x
    x = 462,550,784,919.39/986,459.80
  6. Step 6: Final answer
    x = 468,899.78

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1.5x scale

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.