Home / 1,392,000.40-2,088,000.60-783,139.60

Finding the Fourth Proportional to 1,392,000.40, 2,088,000.60 and 783,139.60

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Solution

The fourth proportional to 1,392,000.40, 2,088,000.60 and 783,139.60 is: 1,174,709.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392,000.40 : 2,088,000.60 = 783,139.60 : x
  2. Step 2: Convert to fraction form
    1,392,000.40/2,088,000.60 = 783,139.60/x
  3. Step 3: Cross multiply
    1,392,000.40x = 2,088,000.60 × 783,139.60
  4. Step 4: Simplify right side
    1,392,000.40x = 1,635,195,954,683.76
  5. Step 5: Solve for x
    x = 1,635,195,954,683.76/1,392,000.40
  6. Step 6: Final answer
    x = 1,174,709.40

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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.