Home / 1,979,630.40-2,967,477.30-912,811.80

Finding the Fourth Proportional to 1,979,630.40, 2,967,477.30 and 912,811.80

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Solution

The fourth proportional to 1,979,630.40, 2,967,477.30 and 912,811.80 is: 1,368,310.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,979,630.40 : 2,967,477.30 = 912,811.80 : x
  2. Step 2: Convert to fraction form
    1,979,630.40/2,967,477.30 = 912,811.80/x
  3. Step 3: Cross multiply
    1,979,630.40x = 2,967,477.30 × 912,811.80
  4. Step 4: Simplify right side
    1,979,630.40x = 2,708,748,295,672.14
  5. Step 5: Solve for x
    x = 2,708,748,295,672.14/1,979,630.40
  6. Step 6: Final answer
    x = 1,368,310.11

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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.