Home / 1,971,200.40-2,956,217.40-772,432.80

Finding the Fourth Proportional to 1,971,200.40, 2,956,217.40 and 772,432.80

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Solution

The fourth proportional to 1,971,200.40, 2,956,217.40 and 772,432.80 is: 1,158,420.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,971,200.40 : 2,956,217.40 = 772,432.80 : x
  2. Step 2: Convert to fraction form
    1,971,200.40/2,956,217.40 = 772,432.80/x
  3. Step 3: Cross multiply
    1,971,200.40x = 2,956,217.40 × 772,432.80
  4. Step 4: Simplify right side
    1,971,200.40x = 2,283,479,283,690.72
  5. Step 5: Solve for x
    x = 2,283,479,283,690.72/1,971,200.40
  6. Step 6: Final answer
    x = 1,158,420.67

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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.