Home / 1,309,271.20-1,963,906.80-422,807.20

Finding the Fourth Proportional to 1,309,271.20, 1,963,906.80 and 422,807.20

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Solution

The fourth proportional to 1,309,271.20, 1,963,906.80 and 422,807.20 is: 634,210.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,309,271.20 : 1,963,906.80 = 422,807.20 : x
  2. Step 2: Convert to fraction form
    1,309,271.20/1,963,906.80 = 422,807.20/x
  3. Step 3: Cross multiply
    1,309,271.20x = 1,963,906.80 × 422,807.20
  4. Step 4: Simplify right side
    1,309,271.20x = 830,353,935,168.96
  5. Step 5: Solve for x
    x = 830,353,935,168.96/1,309,271.20
  6. Step 6: Final answer
    x = 634,210.80

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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.